991713995 has 8 divisors (see below), whose sum is σ = 1190248560. Its totient is φ = 793243360.

The previous prime is 991713971. The next prime is 991714019. The reversal of 991713995 is 599317199.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (991713971) and next prime (991714019).

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

It is not a de Polignac number, because 991713995 - 2²⁴ = 974936779 is a prime.

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, 30380 + ... + 53910.

It is an arithmetic number, because the mean of its divisors is an integer number (148781070).

Almost surely, 2^991713995 is an apocalyptic number.

991713995 is a deficient number, since it is larger than the sum of its proper divisors (198534565).

991713995 is a wasteful number, since it uses less digits than its factorization.

991713995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31965.

The product of its digits is 688905, while the sum is 53.

The square root of 991713995 is about 31491.4908348271. The cubic root of 991713995 is about 997.2303343677.

The spelling of 991713995 in words is "nine hundred ninety-one million, seven hundred thirteen thousand, nine hundred ninety-five".