920109904 has 40 divisors (see below), whose sum is σ = 2157236928. Its totient is φ = 371136000.

The previous prime is 920109881. The next prime is 920109907. The reversal of 920109904 is 409901029.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 920109904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920109907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239722 + ... + 243529.

Almost surely, 2^920109904 is an apocalyptic number.

It is an amenable number.

920109904 is an abundant number, since it is smaller than the sum of its proper divisors (1237127024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

920109904 is a wasteful number, since it uses less digits than its factorization.

920109904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483283 (or 483277 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 920109904 is about 30333.3134358909. The cubic root of 920109904 is about 972.6275534457.

The spelling of 920109904 in words is "nine hundred twenty million, one hundred nine thousand, nine hundred four".