93090391 has 2 divisors, whose sum is σ = 93090392. Its totient is φ = 93090390.

The previous prime is 93090341. The next prime is 93090401. The reversal of 93090391 is 19309039.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (19309039) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93090391 - 2⁹ = 93089879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93090311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46545195 + 46545196.

It is an arithmetic number, because the mean of its divisors is an integer number (46545196).

Almost surely, 2^93090391 is an apocalyptic number.

93090391 is a deficient number, since it is larger than the sum of its proper divisors (1).

93090391 is an equidigital number, since it uses as much as digits as its factorization.

93090391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 93090391 is about 9648.3361778081. The cubic root of 93090391 is about 453.2122271774.

The spelling of 93090391 in words is "ninety-three million, ninety thousand, three hundred ninety-one".