7904040940 has 48 divisors (see below), whose sum is σ = 16707962880. Its totient is φ = 3140812800.

The previous prime is 7904040839. The next prime is 7904040941. The reversal of 7904040940 is 490404097.

It is a self number, because there is not a number n which added to its sum of digits gives 7904040940.

It is not an unprimeable number, because it can be changed into a prime (7904040941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4936140 + ... + 4937740.

It is an arithmetic number, because the mean of its divisors is an integer number (348082560).

Almost surely, 2^7904040940 is an apocalyptic number.

It is an amenable number.

7904040940 is an abundant number, since it is smaller than the sum of its proper divisors (8803921940).

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

7904040940 is a wasteful number, since it uses less digits than its factorization.

7904040940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082 (or 3080 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 7904040940 is about 88904.6733304836. The cubic root of 7904040940 is about 1991.9712241748.

The spelling of 7904040940 in words is "seven billion, nine hundred four million, forty thousand, nine hundred forty".