76990040 has 16 divisors (see below), whose sum is σ = 173227680. Its totient is φ = 30796000.

The previous prime is 76990037. The next prime is 76990049. The reversal of 76990040 is 4009967.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76990049) 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, 962336 + ... + 962415.

It is an arithmetic number, because the mean of its divisors is an integer number (10826730).

Almost surely, 2^76990040 is an apocalyptic number.

It is an amenable number.

76990040 is an abundant number, since it is smaller than the sum of its proper divisors (96237640).

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

76990040 is a wasteful number, since it uses less digits than its factorization.

76990040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924762 (or 1924758 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 76990040 is about 8774.3968453678. The cubic root of 76990040 is about 425.4137424150.

It can be divided in two parts, 769 and 90040, that added together give a palindrome (90809).

The spelling of 76990040 in words is "seventy-six million, nine hundred ninety thousand, forty".