90390967 has 2 divisors, whose sum is σ = 90390968. Its totient is φ = 90390966.

The previous prime is 90390929. The next prime is 90390997. The reversal of 90390967 is 76909309.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90390967 - 2²³ = 82002359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90390997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45195483 + 45195484.

It is an arithmetic number, because the mean of its divisors is an integer number (45195484).

Almost surely, 2^90390967 is an apocalyptic number.

90390967 is a deficient number, since it is larger than the sum of its proper divisors (1).

90390967 is an equidigital number, since it uses as much as digits as its factorization.

90390967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 90390967 is about 9507.4164208790. The cubic root of 90390967 is about 448.7884562911.

The spelling of 90390967 in words is "ninety million, three hundred ninety thousand, nine hundred sixty-seven".