904772005 has 4 divisors (see below), whose sum is σ = 1085726412. Its totient is φ = 723817600.

The previous prime is 904771997. The next prime is 904772017. The reversal of 904772005 is 500277409.

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 354681889 + 550090116 = 18833^2 + 23454^2 .

It is not a de Polignac number, because 904772005 - 2³ = 904771997 is a prime.

It is a super-2 number, since 2×904772005² = 1637224762063440050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90477196 + ... + 90477205.

It is an arithmetic number, because the mean of its divisors is an integer number (271431603).

Almost surely, 2^904772005 is an apocalyptic number.

It is an amenable number.

904772005 is a deficient number, since it is larger than the sum of its proper divisors (180954407).

904772005 is a wasteful number, since it uses less digits than its factorization.

904772005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180954406.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 904772005 is about 30079.4282691676. The cubic root of 904772005 is about 967.1927924029.

The spelling of 904772005 in words is "nine hundred four million, seven hundred seventy-two thousand, five".