424473857 has 4 divisors (see below), whose sum is σ = 425856816. Its totient is φ = 423090900.

The previous prime is 424473821. The next prime is 424473871. The reversal of 424473857 is 758374424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 424473857 - 2¹⁰ = 424472833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424473817) 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 3 ways as a sum of consecutive naturals, for example, 691019 + ... + 691632.

It is an arithmetic number, because the mean of its divisors is an integer number (106464204).

Almost surely, 2^424473857 is an apocalyptic number.

It is an amenable number.

424473857 is a deficient number, since it is larger than the sum of its proper divisors (1382959).

424473857 is a wasteful number, since it uses less digits than its factorization.

424473857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382958.

The product of its digits is 752640, while the sum is 44.

The square root of 424473857 is about 20602.7633340773. The cubic root of 424473857 is about 751.5369117923.

The spelling of 424473857 in words is "four hundred twenty-four million, four hundred seventy-three thousand, eight hundred fifty-seven".