990535499 has 2 divisors, whose sum is σ = 990535500. Its totient is φ = 990535498.

The previous prime is 990535471. The next prime is 990535501. The reversal of 990535499 is 994535099.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990535499 is a prime.

It is a Sophie Germain prime.

Together with 990535501, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 990535499.

It is not a weakly prime, because it can be changed into another prime (990535439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495267749 + 495267750.

It is an arithmetic number, because the mean of its divisors is an integer number (495267750).

Almost surely, 2^990535499 is an apocalyptic number.

990535499 is a deficient number, since it is larger than the sum of its proper divisors (1).

990535499 is an equidigital number, since it uses as much as digits as its factorization.

990535499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1968300, while the sum is 53.

The square root of 990535499 is about 31472.7739324007. The cubic root of 990535499 is about 996.8351606921.

The spelling of 990535499 in words is "nine hundred ninety million, five hundred thirty-five thousand, four hundred ninety-nine".