93390881 has 2 divisors, whose sum is σ = 93390882. Its totient is φ = 93390880.

The previous prime is 93390859. The next prime is 93390887. The reversal of 93390881 is 18809339.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91374481 + 2016400 = 9559^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 93390881 - 2¹⁴ = 93374497 is a prime.

It is a super-2 number, since 2×93390881² = 17443713307912322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (93390887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46695440 + 46695441.

It is an arithmetic number, because the mean of its divisors is an integer number (46695441).

Almost surely, 2^93390881 is an apocalyptic number.

It is an amenable number.

93390881 is a deficient number, since it is larger than the sum of its proper divisors (1).

93390881 is an equidigital number, since it uses as much as digits as its factorization.

93390881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 93390881 is about 9663.8957465403. The cubic root of 93390881 is about 453.6993503913.

The spelling of 93390881 in words is "ninety-three million, three hundred ninety thousand, eight hundred eighty-one".