90016919 has 2 divisors, whose sum is σ = 90016920. Its totient is φ = 90016918.

The previous prime is 90016897. The next prime is 90016951. The reversal of 90016919 is 91961009.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90016919 - 2²⁰ = 88968343 is a prime.

It is a super-2 number, since 2×90016919² = 16206091412505122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90010919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45008459 + 45008460.

It is an arithmetic number, because the mean of its divisors is an integer number (45008460).

Almost surely, 2^90016919 is an apocalyptic number.

90016919 is a deficient number, since it is larger than the sum of its proper divisors (1).

90016919 is an equidigital number, since it uses as much as digits as its factorization.

90016919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 90016919 is about 9487.7246481967. The cubic root of 90016919 is about 448.1685547062.

The spelling of 90016919 in words is "ninety million, sixteen thousand, nine hundred nineteen".