90388927 has 2 divisors, whose sum is σ = 90388928. Its totient is φ = 90388926.

The previous prime is 90388861. The next prime is 90388931. The reversal of 90388927 is 72988309.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90388927 - 2⁷ = 90388799 is a prime.

It is a super-2 number, since 2×90388927² = 16340316248422658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90388937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45194463 + 45194464.

It is an arithmetic number, because the mean of its divisors is an integer number (45194464).

Almost surely, 2^90388927 is an apocalyptic number.

90388927 is a deficient number, since it is larger than the sum of its proper divisors (1).

90388927 is an equidigital number, since it uses as much as digits as its factorization.

90388927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 90388927 is about 9507.3091356072. The cubic root of 90388927 is about 448.7850800860.

It can be divided in two parts, 90 and 388927, that added together give a cube (389017 = 73³).

The spelling of 90388927 in words is "ninety million, three hundred eighty-eight thousand, nine hundred twenty-seven".