992278791 has 12 divisors (see below), whose sum is σ = 1638047632. Its totient is φ = 567016416.

The previous prime is 992278753. The next prime is 992278829. The reversal of 992278791 is 197872299.

It is an interprime number because it is at equal distance from previous prime (992278753) and next prime (992278829).

It is not a de Polignac number, because 992278791 - 2²⁵ = 958724359 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 (992278291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7875166 + ... + 7875291.

Almost surely, 2^992278791 is an apocalyptic number.

992278791 is a deficient number, since it is larger than the sum of its proper divisors (645768841).

992278791 is a wasteful number, since it uses less digits than its factorization.

992278791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15750470 (or 15750467 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The square root of 992278791 is about 31500.4569966850. The cubic root of 992278791 is about 997.4196109863.

The spelling of 992278791 in words is "nine hundred ninety-two million, two hundred seventy-eight thousand, seven hundred ninety-one".