93090817 has 2 divisors, whose sum is σ = 93090818. Its totient is φ = 93090816.

The previous prime is 93090763. The next prime is 93090839. The reversal of 93090817 is 71809039.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76108176 + 16982641 = 8724^2 + 4121^2 .

It is an emirp because it is prime and its reverse (71809039) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93090817 is a prime.

It is equal to p_5385583 and since 93090817 and 5385583 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (93090857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46545408 + 46545409.

It is an arithmetic number, because the mean of its divisors is an integer number (46545409).

Almost surely, 2^93090817 is an apocalyptic number.

It is an amenable number.

93090817 is a deficient number, since it is larger than the sum of its proper divisors (1).

93090817 is an equidigital number, since it uses as much as digits as its factorization.

93090817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 93090817 is about 9648.3582541280. The cubic root of 93090817 is about 453.2129185059.

The spelling of 93090817 in words is "ninety-three million, ninety thousand, eight hundred seventeen".