999160491 has 8 divisors (see below), whose sum is σ = 1522530304. Its totient is φ = 570948840.

The previous prime is 999160489. The next prime is 999160501. The reversal of 999160491 is 194061999.

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

It is not a de Polignac number, because 999160491 - 2¹ = 999160489 is a prime.

It is a super-2 number, since 2×999160491² = 1996643373550722162, which contains 22 as substring.

It is the 31610-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 999160491.

It is not an unprimeable number, because it can be changed into a prime (999160441) by changing a digit.

It is a nontrivial repunit in base 31609.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23789515 + ... + 23789556.

It is an arithmetic number, because the mean of its divisors is an integer number (190316288).

Almost surely, 2^999160491 is an apocalyptic number.

999160491 is a deficient number, since it is larger than the sum of its proper divisors (523369813).

999160491 is a wasteful number, since it uses less digits than its factorization.

999160491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47579081.

The product of its (nonzero) digits is 157464, while the sum is 48.

The square root of 999160491 is about 31609.5000118635. The cubic root of 999160491 is about 999.7200853218.

It can be divided in two parts, 99 and 9160491, that multiplied together give a palindrome (906888609).

The spelling of 999160491 in words is "nine hundred ninety-nine million, one hundred sixty thousand, four hundred ninety-one".