990147965 has 8 divisors (see below), whose sum is σ = 1188415800. Its totient is φ = 791959552.

The previous prime is 990147959. The next prime is 990147973. The reversal of 990147965 is 569741099.

It can be written as a sum of positive squares in 4 ways, for example, as 340254916 + 649893049 = 18446^2 + 25493^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990147965 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 12317 + ... + 46173.

It is an arithmetic number, because the mean of its divisors is an integer number (148551975).

Almost surely, 2^990147965 is an apocalyptic number.

It is an amenable number.

990147965 is a deficient number, since it is larger than the sum of its proper divisors (198267835).

990147965 is a wasteful number, since it uses less digits than its factorization.

990147965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39711.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 990147965 is about 31466.6166754546. The cubic root of 990147965 is about 996.7051441815.

The spelling of 990147965 in words is "nine hundred ninety million, one hundred forty-seven thousand, nine hundred sixty-five".