40079888 has 20 divisors (see below), whose sum is σ = 77889360. Its totient is φ = 19979424.

The previous prime is 40079887. The next prime is 40079891. The reversal of 40079888 is 88897004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40079887) 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, 1943 + ... + 9161.

It is an arithmetic number, because the mean of its divisors is an integer number (3894468).

Almost surely, 2^40079888 is an apocalyptic number.

It is an amenable number.

40079888 is a deficient number, since it is larger than the sum of its proper divisors (37809472).

40079888 is a wasteful number, since it uses less digits than its factorization.

40079888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574 (or 7568 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 40079888 is about 6330.8678709953. The cubic root of 40079888 is about 342.2227155281. Note that the first 3 decimals are identical.

The spelling of 40079888 in words is "forty million, seventy-nine thousand, eight hundred eighty-eight".