40938857 has 2 divisors, whose sum is σ = 40938858. Its totient is φ = 40938856.

The previous prime is 40938847. The next prime is 40938889. The reversal of 40938857 is 75883904.

40938857 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., 38700841 + 2238016 = 6221^2 + 1496^2 .

It is a cyclic number.

It is not a de Polignac number, because 40938857 - 2²⁰ = 39890281 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40938847) 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, 20469428 + 20469429.

It is an arithmetic number, because the mean of its divisors is an integer number (20469429).

Almost surely, 2^40938857 is an apocalyptic number.

It is an amenable number.

40938857 is a deficient number, since it is larger than the sum of its proper divisors (1).

40938857 is an equidigital number, since it uses as much as digits as its factorization.

40938857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 40938857 is about 6398.3479899111. The cubic root of 40938857 is about 344.6502287221.

The spelling of 40938857 in words is "forty million, nine hundred thirty-eight thousand, eight hundred fifty-seven".