999382961 has 8 divisors (see below), whose sum is σ = 1067536584. Its totient is φ = 932270080.

The previous prime is 999382903. The next prime is 999383039. The reversal of 999382961 is 169283999.

It can be written as a sum of positive squares in 4 ways, for example, as 299463025 + 699919936 = 17305^2 + 26456^2 .

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-999382961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 999382897 and 999382906.

It is not an unprimeable number, because it can be changed into a prime (999384961) 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, 258200 + ... + 262041.

It is an arithmetic number, because the mean of its divisors is an integer number (133442073).

Almost surely, 2^999382961 is an apocalyptic number.

It is an amenable number.

999382961 is a deficient number, since it is larger than the sum of its proper divisors (68153623).

999382961 is a wasteful number, since it uses less digits than its factorization.

999382961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520371.

The product of its digits is 1889568, while the sum is 56.

The square root of 999382961 is about 31613.0188529979. The cubic root of 999382961 is about 999.7942780147.

The spelling of 999382961 in words is "nine hundred ninety-nine million, three hundred eighty-two thousand, nine hundred sixty-one".