90877499 has 2 divisors, whose sum is σ = 90877500. Its totient is φ = 90877498.

The previous prime is 90877487. The next prime is 90877519. The reversal of 90877499 is 99477809.

It is a weak prime.

It is an emirp because it is prime and its reverse (99477809) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90877499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90877499.

It is not a weakly prime, because it can be changed into another prime (90877429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45438749 + 45438750.

It is an arithmetic number, because the mean of its divisors is an integer number (45438750).

Almost surely, 2^90877499 is an apocalyptic number.

90877499 is a deficient number, since it is larger than the sum of its proper divisors (1).

90877499 is an equidigital number, since it uses as much as digits as its factorization.

90877499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 90877499 is about 9532.9690548118. The cubic root of 90877499 is about 449.5922215397.

The spelling of 90877499 in words is "ninety million, eight hundred seventy-seven thousand, four hundred ninety-nine".