40113388 has 12 divisors (see below), whose sum is σ = 80226832. Its totient is φ = 17191440.

The previous prime is 40113383. The next prime is 40113391. The reversal of 40113388 is 88331104.

40113388 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1432621 = 40113388 / (4 + 0 + 1 + 1 + 3 + 3 + 8 + 8).

It is not an unprimeable number, because it can be changed into a prime (40113383) 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 3 ways as a sum of consecutive naturals, for example, 716283 + ... + 716338.

Almost surely, 2^40113388 is an apocalyptic number.

It is an amenable number.

40113388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40113388 is a wasteful number, since it uses less digits than its factorization.

40113388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432632 (or 1432630 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 40113388 is about 6333.5130851685. The cubic root of 40113388 is about 342.3180357241.

The spelling of 40113388 in words is "forty million, one hundred thirteen thousand, three hundred eighty-eight".