904881 has 4 divisors (see below), whose sum is σ = 1206512. Its totient is φ = 603252.

The previous prime is 904879. The next prime is 904901. The reversal of 904881 is 188409.

It is a happy number.

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 not a de Polignac number, because 904881 - 2¹ = 904879 is a prime.

It is a super-2 number, since 2×904881² = 1637619248322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (904801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150811 + ... + 150816.

It is an arithmetic number, because the mean of its divisors is an integer number (301628).

2⁹⁰⁴⁸⁸¹ is an apocalyptic number.

It is an amenable number.

904881 is a deficient number, since it is larger than the sum of its proper divisors (301631).

904881 is a wasteful number, since it uses less digits than its factorization.

904881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301630.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 904881 is about 951.2523324544. The cubic root of 904881 is about 96.7231629055.

The spelling of 904881 in words is "nine hundred four thousand, eight hundred eighty-one".