992197782 has 32 divisors (see below), whose sum is σ = 2300751360. Its totient is φ = 316352520.

The previous prime is 992197751. The next prime is 992197783. The reversal of 992197782 is 287791299.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992197783) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 398194 + ... + 400677.

It is an arithmetic number, because the mean of its divisors is an integer number (71898480).

Almost surely, 2^992197782 is an apocalyptic number.

992197782 is an abundant number, since it is smaller than the sum of its proper divisors (1308553578).

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

992197782 is a wasteful number, since it uses less digits than its factorization.

992197782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798905 (or 798899 counting only the distinct ones).

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

The square root of 992197782 is about 31499.1711319520. The cubic root of 992197782 is about 997.3924673499.

The spelling of 992197782 in words is "nine hundred ninety-two million, one hundred ninety-seven thousand, seven hundred eighty-two".