93640831 has 2 divisors, whose sum is σ = 93640832. Its totient is φ = 93640830.

The previous prime is 93640817. The next prime is 93640861. The reversal of 93640831 is 13804639.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93640831 is a prime.

It is a super-2 number, since 2×93640831² = 17537210460741122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93640861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46820415 + 46820416.

It is an arithmetic number, because the mean of its divisors is an integer number (46820416).

Almost surely, 2^93640831 is an apocalyptic number.

93640831 is a deficient number, since it is larger than the sum of its proper divisors (1).

93640831 is an equidigital number, since it uses as much as digits as its factorization.

93640831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 93640831 is about 9676.8192604802. The cubic root of 93640831 is about 454.1037479523.

The spelling of 93640831 in words is "ninety-three million, six hundred forty thousand, eight hundred thirty-one".