40388808 has 16 divisors (see below), whose sum is σ = 100972080. Its totient is φ = 13462928.

The previous prime is 40388807. The next prime is 40388819. The reversal of 40388808 is 80888304.

It is a super-3 number, since 3×40388808³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40388807) 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, 841410 + ... + 841457.

It is an arithmetic number, because the mean of its divisors is an integer number (6310755).

Almost surely, 2^40388808 is an apocalyptic number.

It is an amenable number.

40388808 is an abundant number, since it is smaller than the sum of its proper divisors (60583272).

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

40388808 is a wasteful number, since it uses less digits than its factorization.

40388808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682876 (or 1682872 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 40388808 is about 6355.2189576757. The cubic root of 40388808 is about 343.0997055352.

The spelling of 40388808 in words is "forty million, three hundred eighty-eight thousand, eight hundred eight".