90992017 has 2 divisors, whose sum is σ = 90992018. Its totient is φ = 90992016.

The previous prime is 90991961. The next prime is 90992021. The reversal of 90992017 is 71029909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88435216 + 2556801 = 9404^2 + 1599^2 .

It is a cyclic number.

It is not a de Polignac number, because 90992017 - 2⁷ = 90991889 is a prime.

It is not a weakly prime, because it can be changed into another prime (90992417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45496008 + 45496009.

It is an arithmetic number, because the mean of its divisors is an integer number (45496009).

Almost surely, 2^90992017 is an apocalyptic number.

It is an amenable number.

90992017 is a deficient number, since it is larger than the sum of its proper divisors (1).

90992017 is an equidigital number, since it uses as much as digits as its factorization.

90992017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 90992017 is about 9538.9735820999. The cubic root of 90992017 is about 449.7809913713.

The spelling of 90992017 in words is "ninety million, nine hundred ninety-two thousand, seventeen".