990959559 has 8 divisors (see below), whose sum is σ = 1323084912. Its totient is φ = 659736960.

The previous prime is 990959533. The next prime is 990959569. The reversal of 990959559 is 955959099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 990959559 - 2⁵ = 990959527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990959509) 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 in 7 ways as a sum of consecutive naturals, for example, 223122 + ... + 227519.

It is an arithmetic number, because the mean of its divisors is an integer number (165385614).

Almost surely, 2^990959559 is an apocalyptic number.

990959559 is a deficient number, since it is larger than the sum of its proper divisors (332125353).

990959559 is a wasteful number, since it uses less digits than its factorization.

990959559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451377.

The product of its (nonzero) digits is 7381125, while the sum is 60.

The square root of 990959559 is about 31479.5101454899. The cubic root of 990959559 is about 996.9773927169.

The spelling of 990959559 in words is "nine hundred ninety million, nine hundred fifty-nine thousand, five hundred fifty-nine".