4992805 has 4 divisors (see below), whose sum is σ = 5991372. Its totient is φ = 3994240.

The previous prime is 4992787. The next prime is 4992809. The reversal of 4992805 is 5082994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1329409 + 3663396 = 1153^2 + 1914^2 .

It is not a de Polignac number, because 4992805 - 2⁷ = 4992677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4992809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499276 + ... + 499285.

It is an arithmetic number, because the mean of its divisors is an integer number (1497843).

Almost surely, 2^4992805 is an apocalyptic number.

It is an amenable number.

4992805 is a deficient number, since it is larger than the sum of its proper divisors (998567).

4992805 is an equidigital number, since it uses as much as digits as its factorization.

4992805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998566.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 4992805 is about 2234.4585473891. The cubic root of 4992805 is about 170.9155334468.

It can be divided in two parts, 499280 and 5, that multiplied together give a square (2496400 = 1580²).

The spelling of 4992805 in words is "four million, nine hundred ninety-two thousand, eight hundred five".