990303599 has 2 divisors, whose sum is σ = 990303600. Its totient is φ = 990303598.

The previous prime is 990303553. The next prime is 990303641. The reversal of 990303599 is 995303099.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990303599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990300599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495151799 + 495151800.

It is an arithmetic number, because the mean of its divisors is an integer number (495151800).

Almost surely, 2^990303599 is an apocalyptic number.

990303599 is a deficient number, since it is larger than the sum of its proper divisors (1).

990303599 is an equidigital number, since it uses as much as digits as its factorization.

990303599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 295245, while the sum is 47.

The square root of 990303599 is about 31469.0895800943. The cubic root of 990303599 is about 996.7573630038.

The spelling of 990303599 in words is "nine hundred ninety million, three hundred three thousand, five hundred ninety-nine".