991368294 has 96 divisors (see below), whose sum is σ = 2461415040. Its totient is φ = 264483072.

The previous prime is 991368289. The next prime is 991368331. The reversal of 991368294 is 492863199.

991368294 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×991368294² = 1965622188696940872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 694009 + ... + 695435.

It is an arithmetic number, because the mean of its divisors is an integer number (25639740).

Almost surely, 2^991368294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 991368294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1230707520).

991368294 is an abundant number, since it is smaller than the sum of its proper divisors (1470046746).

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

991368294 is a wasteful number, since it uses less digits than its factorization.

991368294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602 (or 1595 counting only the distinct ones).

The product of its digits is 839808, while the sum is 51.

The square root of 991368294 is about 31486.0015562472. The cubic root of 991368294 is about 997.1144462550.

The spelling of 991368294 in words is "nine hundred ninety-one million, three hundred sixty-eight thousand, two hundred ninety-four".