940286857 has 2 divisors, whose sum is σ = 940286858. Its totient is φ = 940286856.

The previous prime is 940286819. The next prime is 940286873. The reversal of 940286857 is 758682049.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 528034441 + 412252416 = 22979^2 + 20304^2 .

It is a cyclic number.

It is not a de Polignac number, because 940286857 - 2⁷ = 940286729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 940286857.

It is not a weakly prime, because it can be changed into another prime (940286257) 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, 470143428 + 470143429.

It is an arithmetic number, because the mean of its divisors is an integer number (470143429).

Almost surely, 2^940286857 is an apocalyptic number.

It is an amenable number.

940286857 is a deficient number, since it is larger than the sum of its proper divisors (1).

940286857 is an equidigital number, since it uses as much as digits as its factorization.

940286857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 940286857 is about 30664.0971985154. The cubic root of 940286857 is about 979.6857443727.

The spelling of 940286857 in words is "nine hundred forty million, two hundred eighty-six thousand, eight hundred fifty-seven".