990756499 has 2 divisors, whose sum is σ = 990756500. Its totient is φ = 990756498.

The previous prime is 990756479. The next prime is 990756517. The reversal of 990756499 is 994657099.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 990756499 - 2⁵ = 990756467 is a prime.

It is not a weakly prime, because it can be changed into another prime (990756479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495378249 + 495378250.

It is an arithmetic number, because the mean of its divisors is an integer number (495378250).

Almost surely, 2^990756499 is an apocalyptic number.

990756499 is a deficient number, since it is larger than the sum of its proper divisors (1).

990756499 is an equidigital number, since it uses as much as digits as its factorization.

990756499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5511240, while the sum is 58.

The square root of 990756499 is about 31476.2847076970. The cubic root of 990756499 is about 996.9092903552.

The spelling of 990756499 in words is "nine hundred ninety million, seven hundred fifty-six thousand, four hundred ninety-nine".