40057412 has 12 divisors (see below), whose sum is σ = 70198380. Its totient is φ = 20000736.

The previous prime is 40057397. The next prime is 40057417. The reversal of 40057412 is 21475004.

It can be written as a sum of positive squares in 2 ways, for example, as 35331136 + 4726276 = 5944^2 + 2174^2 .

It is a super-2 number, since 2×40057412² = 3209192512275488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40057417) 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, 3587 + ... + 9642.

It is an arithmetic number, because the mean of its divisors is an integer number (5849865).

Almost surely, 2^40057412 is an apocalyptic number.

It is an amenable number.

40057412 is a deficient number, since it is larger than the sum of its proper divisors (30140968).

40057412 is a wasteful number, since it uses less digits than its factorization.

40057412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13990 (or 13988 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 40057412 is about 6329.0925099891. The cubic root of 40057412 is about 342.1587330139.

The spelling of 40057412 in words is "forty million, fifty-seven thousand, four hundred twelve".