991934754 has 16 divisors (see below), whose sum is σ = 2070124992. Its totient is φ = 316269008.

The previous prime is 991934693. The next prime is 991934773. The reversal of 991934754 is 457439199.

It is a junction number, because it is equal to n+sod(n) for n = 991934697 and 991934706.

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, 3593829 + ... + 3594104.

It is an arithmetic number, because the mean of its divisors is an integer number (129382812).

Almost surely, 2^991934754 is an apocalyptic number.

991934754 is an abundant number, since it is smaller than the sum of its proper divisors (1078190238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

991934754 is a wasteful number, since it uses less digits than its factorization.

991934754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7187961.

The product of its digits is 1224720, while the sum is 51.

The square root of 991934754 is about 31494.9956977295. The cubic root of 991934754 is about 997.3043245300.

The spelling of 991934754 in words is "nine hundred ninety-one million, nine hundred thirty-four thousand, seven hundred fifty-four".