995869991 has 6 divisors (see below), whose sum is σ = 1003547376. Its totient is φ = 988250900.

The previous prime is 995869943. The next prime is 995870003. The reversal of 995869991 is 199968599.

It is not a de Polignac number, because 995869991 - 2²² = 991675687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (995869921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11855 + ... + 46176.

It is an arithmetic number, because the mean of its divisors is an integer number (167257896).

Almost surely, 2^995869991 is an apocalyptic number.

995869991 is a deficient number, since it is larger than the sum of its proper divisors (7677385).

995869991 is an equidigital number, since it uses as much as digits as its factorization.

995869991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58293 (or 58162 counting only the distinct ones).

The product of its digits is 14171760, while the sum is 65.

The square root of 995869991 is about 31557.4078624972. The cubic root of 995869991 is about 998.6214307535.

The spelling of 995869991 in words is "nine hundred ninety-five million, eight hundred sixty-nine thousand, nine hundred ninety-one".