40367857 has 2 divisors, whose sum is σ = 40367858. Its totient is φ = 40367856.

The previous prime is 40367827. The next prime is 40367869. The reversal of 40367857 is 75876304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38452401 + 1915456 = 6201^2 + 1384^2 .

It is a cyclic number.

It is not a de Polignac number, because 40367857 - 2⁷ = 40367729 is a prime.

It is not a weakly prime, because it can be changed into another prime (40367827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20183928 + 20183929.

It is an arithmetic number, because the mean of its divisors is an integer number (20183929).

Almost surely, 2^40367857 is an apocalyptic number.

It is an amenable number.

40367857 is a deficient number, since it is larger than the sum of its proper divisors (1).

40367857 is an equidigital number, since it uses as much as digits as its factorization.

40367857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 40367857 is about 6353.5704135549. The cubic root of 40367857 is about 343.0403695823.

The spelling of 40367857 in words is "forty million, three hundred sixty-seven thousand, eight hundred fifty-seven".