40507912 has 8 divisors (see below), whose sum is σ = 75952350. Its totient is φ = 20253952.

The previous prime is 40507897. The next prime is 40507913. The reversal of 40507912 is 21970504.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40271716 + 236196 = 6346^2 + 486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (40507913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2531737 + ... + 2531752.

Almost surely, 2^40507912 is an apocalyptic number.

It is an amenable number.

40507912 is a deficient number, since it is larger than the sum of its proper divisors (35444438).

40507912 is a wasteful number, since it uses less digits than its factorization.

40507912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063495 (or 5063491 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 40507912 is about 6364.5826257501. The cubic root of 40507912 is about 343.4366342212.

The spelling of 40507912 in words is "forty million, five hundred seven thousand, nine hundred twelve".