40919904 has 60 divisors (see below), whose sum is σ = 120351924. Its totient is φ = 13639104.

The previous prime is 40919881. The next prime is 40919909. The reversal of 40919904 is 40991904.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40919909) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5302 + ... + 10485.

Almost surely, 2^40919904 is an apocalyptic number.

It is an amenable number.

40919904 is an abundant number, since it is smaller than the sum of its proper divisors (79432020).

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

40919904 is a wasteful number, since it uses less digits than its factorization.

40919904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15809 (or 15792 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 40919904 is about 6396.8667330186. The cubic root of 40919904 is about 344.5970342384.

The spelling of 40919904 in words is "forty million, nine hundred nineteen thousand, nine hundred four".