40129932 has 12 divisors (see below), whose sum is σ = 93636536. Its totient is φ = 13376640.

The previous prime is 40129913. The next prime is 40129937. The reversal of 40129932 is 23992104.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×40129932² = 3220822884649248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40129932.

It is not an unprimeable number, because it can be changed into a prime (40129937) 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, 1672069 + ... + 1672092.

Almost surely, 2^40129932 is an apocalyptic number.

It is an amenable number.

40129932 is an abundant number, since it is smaller than the sum of its proper divisors (53506604).

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

40129932 is a wasteful number, since it uses less digits than its factorization.

40129932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3344168 (or 3344166 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 40129932 is about 6334.8190187250. The cubic root of 40129932 is about 342.3650900989.

The spelling of 40129932 in words is "forty million, one hundred twenty-nine thousand, nine hundred thirty-two".