989930633 has 4 divisors (see below), whose sum is σ = 990557568. Its totient is φ = 989303700.

The previous prime is 989930629. The next prime is 989930651. The reversal of 989930633 is 336039989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 989930633 - 2² = 989930629 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989930663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311093 + ... + 314258.

It is an arithmetic number, because the mean of its divisors is an integer number (247639392).

Almost surely, 2^989930633 is an apocalyptic number.

It is an amenable number.

989930633 is a deficient number, since it is larger than the sum of its proper divisors (626935).

989930633 is a wasteful number, since it uses less digits than its factorization.

989930633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626934.

The product of its (nonzero) digits is 944784, while the sum is 50.

The square root of 989930633 is about 31463.1631118043. The cubic root of 989930633 is about 996.6322150906.

The spelling of 989930633 in words is "nine hundred eighty-nine million, nine hundred thirty thousand, six hundred thirty-three".