424949805 has 54 divisors (see below), whose sum is σ = 858793806. Its totient is φ = 193820256.

The previous prime is 424949783. The next prime is 424949807. The reversal of 424949805 is 508949424.

It can be written as a sum of positive squares in only one way, i.e., 339959844 + 84989961 = 18438^2 + 9219^2 .

It is not a de Polignac number, because 424949805 - 2⁷ = 424949677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424949807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 967776 + ... + 968214.

It is an arithmetic number, because the mean of its divisors is an integer number (15903589).

Almost surely, 2^424949805 is an apocalyptic number.

424949805 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

424949805 is an abundant number, since it is smaller than the sum of its proper divisors (433844001).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

424949805 is an equidigital number, since it uses as much as digits as its factorization.

424949805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 424949805 is about 20614.3106845706. The cubic root of 424949805 is about 751.8176977410.

Multiplying 424949805 by its sum of digits (45), we get a square (19122741225 = 138285²).

424949805 divided by its sum of digits (45) gives a square (9443329 = 3073²).

Multiplying 424949805 by its product of nonzero digits (414720), we get a square (176235183129600 = 13275360²).

The spelling of 424949805 in words is "four hundred twenty-four million, nine hundred forty-nine thousand, eight hundred five".