40400088 has 32 divisors (see below), whose sum is σ = 103466160. Its totient is φ = 13137920.

The previous prime is 40400083. The next prime is 40400089. The reversal of 40400088 is 88000404.

It is a super-2 number, since 2×40400088² = 3264334220815488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400081) 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, 19545 + ... + 21512.

Almost surely, 2^40400088 is an apocalyptic number.

It is an amenable number.

40400088 is an abundant number, since it is smaller than the sum of its proper divisors (63066072).

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

40400088 is a wasteful number, since it uses less digits than its factorization.

40400088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41107 (or 41103 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 40400088 is about 6356.1063553090. The cubic root of 40400088 is about 343.1316434625.

The spelling of 40400088 in words is "forty million, four hundred thousand, eighty-eight".