93939457 has 2 divisors, whose sum is σ = 93939458. Its totient is φ = 93939456.

The previous prime is 93939449. The next prime is 93939481. The reversal of 93939457 is 75493939.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54110736 + 39828721 = 7356^2 + 6311^2 .

It is a cyclic number.

It is not a de Polignac number, because 93939457 - 2³ = 93939449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 93939457.

It is not a weakly prime, because it can be changed into another prime (93939407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46969728 + 46969729.

It is an arithmetic number, because the mean of its divisors is an integer number (46969729).

Almost surely, 2^93939457 is an apocalyptic number.

It is an amenable number.

93939457 is a deficient number, since it is larger than the sum of its proper divisors (1).

93939457 is an equidigital number, since it uses as much as digits as its factorization.

93939457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 49.

The square root of 93939457 is about 9692.2369451020. The cubic root of 93939457 is about 454.5859567146.

The spelling of 93939457 in words is "ninety-three million, nine hundred thirty-nine thousand, four hundred fifty-seven".