40290888 has 32 divisors (see below), whose sum is σ = 109884960. Its totient is φ = 12209280.

The previous prime is 40290883. The next prime is 40290907. The reversal of 40290888 is 88809204.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40290883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76045 + ... + 76572.

It is an arithmetic number, because the mean of its divisors is an integer number (3433905).

Almost surely, 2^40290888 is an apocalyptic number.

It is an amenable number.

40290888 is an abundant number, since it is smaller than the sum of its proper divisors (69594072).

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

40290888 is a wasteful number, since it uses less digits than its factorization.

40290888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152637 (or 152633 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 40290888 is about 6347.5103780931. The cubic root of 40290888 is about 342.8222069562.

The spelling of 40290888 in words is "forty million, two hundred ninety thousand, eight hundred eighty-eight".