93390217 has 2 divisors, whose sum is σ = 93390218. Its totient is φ = 93390216.

The previous prime is 93390211. The next prime is 93390221. The reversal of 93390217 is 71209339.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72267001 + 21123216 = 8501^2 + 4596^2 .

It is an emirp because it is prime and its reverse (71209339) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93390217 is a prime.

It is not a weakly prime, because it can be changed into another prime (93390211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46695108 + 46695109.

It is an arithmetic number, because the mean of its divisors is an integer number (46695109).

Almost surely, 2^93390217 is an apocalyptic number.

It is an amenable number.

93390217 is a deficient number, since it is larger than the sum of its proper divisors (1).

93390217 is an equidigital number, since it uses as much as digits as its factorization.

93390217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 93390217 is about 9663.8613918040. The cubic root of 93390217 is about 453.6982751361.

The spelling of 93390217 in words is "ninety-three million, three hundred ninety thousand, two hundred seventeen".