40129088 has 14 divisors (see below), whose sum is σ = 79631286. Its totient is φ = 20064512.

The previous prime is 40129087. The next prime is 40129093. The reversal of 40129088 is 88092104.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27962944 + 12166144 = 5288^2 + 3488^2 .

It is a super-2 number, since 2×40129088² = 3220687407423488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (40129087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313445 + ... + 313572.

It is an arithmetic number, because the mean of its divisors is an integer number (5687949).

Almost surely, 2^40129088 is an apocalyptic number.

It is an amenable number.

40129088 is a deficient number, since it is larger than the sum of its proper divisors (39502198).

40129088 is an equidigital number, since it uses as much as digits as its factorization.

40129088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627029 (or 627019 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 40129088 is about 6334.7524024227. The cubic root of 40129088 is about 342.3626899108.

The spelling of 40129088 in words is "forty million, one hundred twenty-nine thousand, eighty-eight".