40415957 has 2 divisors, whose sum is σ = 40415958. Its totient is φ = 40415956.

The previous prime is 40415917. The next prime is 40416007. The reversal of 40415957 is 75951404.

40415957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31259281 + 9156676 = 5591^2 + 3026^2 .

It is a cyclic number.

It is not a de Polignac number, because 40415957 - 2²⁰ = 39367381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40415917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20207978 + 20207979.

It is an arithmetic number, because the mean of its divisors is an integer number (20207979).

Almost surely, 2^40415957 is an apocalyptic number.

It is an amenable number.

40415957 is a deficient number, since it is larger than the sum of its proper divisors (1).

40415957 is an equidigital number, since it uses as much as digits as its factorization.

40415957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 40415957 is about 6357.3545598779. The cubic root of 40415957 is about 343.1765645136.

It can be divided in two parts, 404 and 15957, that added together give a palindrome (16361).

The spelling of 40415957 in words is "forty million, four hundred fifteen thousand, nine hundred fifty-seven".