93400657 has 4 divisors (see below), whose sum is σ = 106743616. Its totient is φ = 80057700.

The previous prime is 93400639. The next prime is 93400661. The reversal of 93400657 is 75600439.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75600439 = 739 ⋅102301.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93400657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (93400607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6671469 + ... + 6671482.

It is an arithmetic number, because the mean of its divisors is an integer number (26685904).

Almost surely, 2^93400657 is an apocalyptic number.

It is an amenable number.

93400657 is a deficient number, since it is larger than the sum of its proper divisors (13342959).

93400657 is a wasteful number, since it uses less digits than its factorization.

93400657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13342958.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 93400657 is about 9664.4015334629. The cubic root of 93400657 is about 453.7151806667.

The spelling of 93400657 in words is "ninety-three million, four hundred thousand, six hundred fifty-seven".