992640847 has 16 divisors (see below), whose sum is σ = 1127844864. Its totient is φ = 865620000.

The previous prime is 992640833. The next prime is 992640917. The reversal of 992640847 is 748046299.

It is a cyclic number.

It is not a de Polignac number, because 992640847 - 2¹¹ = 992638799 is a prime.

It is a super-2 number, since 2×992640847² = 1970671702265754818, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 992640847 parts by 44556 straight cuts.

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 992640847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992640247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11722 + ... + 46072.

It is an arithmetic number, because the mean of its divisors is an integer number (70490304).

Almost surely, 2^992640847 is an apocalyptic number.

992640847 is a deficient number, since it is larger than the sum of its proper divisors (135204017).

992640847 is a wasteful number, since it uses less digits than its factorization.

992640847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34470.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 992640847 is about 31506.2033098246. The cubic root of 992640847 is about 997.5409068175.

The spelling of 992640847 in words is "nine hundred ninety-two million, six hundred forty thousand, eight hundred forty-seven".