904485491 has 32 divisors (see below), whose sum is σ = 1141260288. Its totient is φ = 697818240.

The previous prime is 904485467. The next prime is 904485499. The reversal of 904485491 is 194584409.

It is not a de Polignac number, because 904485491 - 2¹⁰ = 904484467 is a prime.

It is a super-2 number, since 2×904485491² = 1636188006859022162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (904485499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 704336 + ... + 705618.

It is an arithmetic number, because the mean of its divisors is an integer number (35664384).

Almost surely, 2^904485491 is an apocalyptic number.

904485491 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

904485491 is a deficient number, since it is larger than the sum of its proper divisors (236774797).

904485491 is a wasteful number, since it uses less digits than its factorization.

904485491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 904485491 is about 30074.6652682952. The cubic root of 904485491 is about 967.0906880309.

The spelling of 904485491 in words is "nine hundred four million, four hundred eighty-five thousand, four hundred ninety-one".