40099976 has 32 divisors (see below), whose sum is σ = 86184000. Its totient is φ = 17134656.

The previous prime is 40099973. The next prime is 40099981. The reversal of 40099976 is 67999004.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (40099973) 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, 22610 + ... + 24318.

It is an arithmetic number, because the mean of its divisors is an integer number (2693250).

Almost surely, 2^40099976 is an apocalyptic number.

It is an amenable number.

40099976 is an abundant number, since it is smaller than the sum of its proper divisors (46084024).

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

40099976 is a wasteful number, since it uses less digits than its factorization.

40099976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141 (or 2137 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 40099976 is about 6332.4541845954. The cubic root of 40099976 is about 342.2798798738.

The spelling of 40099976 in words is "forty million, ninety-nine thousand, nine hundred seventy-six".