990748699 has 2 divisors, whose sum is σ = 990748700. Its totient is φ = 990748698.

The previous prime is 990748651. The next prime is 990748739. The reversal of 990748699 is 996847099.

It is a strong prime.

It is an emirp because it is prime and its reverse (996847099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 990748699 - 2⁷ = 990748571 is a prime.

It is not a weakly prime, because it can be changed into another prime (990748609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495374349 + 495374350.

It is an arithmetic number, because the mean of its divisors is an integer number (495374350).

Almost surely, 2^990748699 is an apocalyptic number.

990748699 is a deficient number, since it is larger than the sum of its proper divisors (1).

990748699 is an equidigital number, since it uses as much as digits as its factorization.

990748699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 61.

The square root of 990748699 is about 31476.1608046471. The cubic root of 990748699 is about 996.9066742018.

The spelling of 990748699 in words is "nine hundred ninety million, seven hundred forty-eight thousand, six hundred ninety-nine".