90616399 has 2 divisors, whose sum is σ = 90616400. Its totient is φ = 90616398.

The previous prime is 90616391. The next prime is 90616417. The reversal of 90616399 is 99361609.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90616399 - 2³ = 90616391 is a prime.

It is a super-2 number, since 2×90616399² = 16422663535454402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90616391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45308199 + 45308200.

It is an arithmetic number, because the mean of its divisors is an integer number (45308200).

Almost surely, 2^90616399 is an apocalyptic number.

90616399 is a deficient number, since it is larger than the sum of its proper divisors (1).

90616399 is an equidigital number, since it uses as much as digits as its factorization.

90616399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 90616399 is about 9519.2646249592. The cubic root of 90616399 is about 449.1612342838.

The spelling of 90616399 in words is "ninety million, six hundred sixteen thousand, three hundred ninety-nine".