999998965 has 32 divisors (see below), whose sum is σ = 1421141760. Its totient is φ = 661300224.

The previous prime is 999998959. The next prime is 999998971. The reversal of 999998965 is 569899999.

It is an interprime number because it is at equal distance from previous prime (999998959) and next prime (999998971).

It is a cyclic number.

It is not a de Polignac number, because 999998965 - 2³ = 999998957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104877 + ... + 114013.

It is an arithmetic number, because the mean of its divisors is an integer number (44410680).

Almost surely, 2^999998965 is an apocalyptic number.

It is an amenable number.

999998965 is a deficient number, since it is larger than the sum of its proper divisors (421142795).

999998965 is a wasteful number, since it uses less digits than its factorization.

999998965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9261.

The product of its digits is 127545840, while the sum is 73.

The square root of 999998965 is about 31622.7602368927. The cubic root of 999998965 is about 999.9996549999. Note that the first 3 decimals are identical.

The spelling of 999998965 in words is "nine hundred ninety-nine million, nine hundred ninety-eight thousand, nine hundred sixty-five".