990803459 has 2 divisors, whose sum is σ = 990803460. Its totient is φ = 990803458.

The previous prime is 990803449. The next prime is 990803557. The reversal of 990803459 is 954308099.

990803459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990803459 is a prime.

It is not a weakly prime, because it can be changed into another prime (990803449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495401729 + 495401730.

It is an arithmetic number, because the mean of its divisors is an integer number (495401730).

Almost surely, 2^990803459 is an apocalyptic number.

990803459 is a deficient number, since it is larger than the sum of its proper divisors (1).

990803459 is an equidigital number, since it uses as much as digits as its factorization.

990803459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 990803459 is about 31477.0306572904. The cubic root of 990803459 is about 996.9250406500.

The spelling of 990803459 in words is "nine hundred ninety million, eight hundred three thousand, four hundred fifty-nine".