990685959 has 8 divisors (see below), whose sum is σ = 1321351920. Its totient is φ = 660238656.

The previous prime is 990685957. The next prime is 990685963. The reversal of 990685959 is 959586099.

990685959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 990685959 - 2¹ = 990685957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990685957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43782 + ... + 62435.

It is an arithmetic number, because the mean of its divisors is an integer number (165168990).

Almost surely, 2^990685959 is an apocalyptic number.

990685959 is a deficient number, since it is larger than the sum of its proper divisors (330665961).

990685959 is a wasteful number, since it uses less digits than its factorization.

990685959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109329.

The product of its (nonzero) digits is 7873200, while the sum is 60.

The square root of 990685959 is about 31475.1641616053. The cubic root of 990685959 is about 996.8856304380.

The spelling of 990685959 in words is "nine hundred ninety million, six hundred eighty-five thousand, nine hundred fifty-nine".