90013387 has 2 divisors, whose sum is σ = 90013388. Its totient is φ = 90013386.

The previous prime is 90013337. The next prime is 90013397. The reversal of 90013387 is 78331009.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90013387 - 2¹⁵ = 89980619 is a prime.

It is a Chen prime.

It is equal to p_5217691 and since 90013387 and 5217691 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 (90013337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45006693 + 45006694.

It is an arithmetic number, because the mean of its divisors is an integer number (45006694).

Almost surely, 2^90013387 is an apocalyptic number.

90013387 is a deficient number, since it is larger than the sum of its proper divisors (1).

90013387 is an equidigital number, since it uses as much as digits as its factorization.

90013387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 90013387 is about 9487.5385111208. The cubic root of 90013387 is about 448.1626930228.

The spelling of 90013387 in words is "ninety million, thirteen thousand, three hundred eighty-seven".