94131857 has 2 divisors, whose sum is σ = 94131858. Its totient is φ = 94131856.

The previous prime is 94131799. The next prime is 94131887. The reversal of 94131857 is 75813149.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80263681 + 13868176 = 8959^2 + 3724^2 .

It is a cyclic number.

It is not a de Polignac number, because 94131857 - 2²⁰ = 93083281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 94131857.

It is not a weakly prime, because it can be changed into another prime (94131887) 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, 47065928 + 47065929.

It is an arithmetic number, because the mean of its divisors is an integer number (47065929).

Almost surely, 2^94131857 is an apocalyptic number.

It is an amenable number.

94131857 is a deficient number, since it is larger than the sum of its proper divisors (1).

94131857 is an equidigital number, since it uses as much as digits as its factorization.

94131857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 94131857 is about 9702.1573374173. The cubic root of 94131857 is about 454.8960951001.

The spelling of 94131857 in words is "ninety-four million, one hundred thirty-one thousand, eight hundred fifty-seven".