992977380 has 120 divisors (see below), whose sum is σ = 3139456320. Its totient is φ = 262716480.

The previous prime is 992977379. The next prime is 992977393. The reversal of 992977380 is 83779299.

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

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 39 ways as a sum of consecutive naturals, for example, 209881 + ... + 214559.

It is an arithmetic number, because the mean of its divisors is an integer number (26162136).

Almost surely, 2^992977380 is an apocalyptic number.

992977380 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 992977380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1569728160).

992977380 is an abundant number, since it is smaller than the sum of its proper divisors (2146478940).

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

992977380 is a wasteful number, since it uses less digits than its factorization.

992977380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831 (or 4820 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The square root of 992977380 is about 31511.5435991320. The cubic root of 992977380 is about 997.6536254993.

The spelling of 992977380 in words is "nine hundred ninety-two million, nine hundred seventy-seven thousand, three hundred eighty".