992447780 has 12 divisors (see below), whose sum is σ = 2084140380. Its totient is φ = 396979104.

The previous prime is 992447761. The next prime is 992447789. The reversal of 992447780 is 87744299.

992447780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 716954176 + 275493604 = 26776^2 + 16598^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (992447789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24811175 + ... + 24811214.

It is an arithmetic number, because the mean of its divisors is an integer number (173678365).

Almost surely, 2^992447780 is an apocalyptic number.

It is an amenable number.

992447780 is an abundant number, since it is smaller than the sum of its proper divisors (1091692600).

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

992447780 is a wasteful number, since it uses less digits than its factorization.

992447780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49622398 (or 49622396 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 992447780 is about 31503.1392086567. The cubic root of 992447780 is about 997.4762292730.

The spelling of 992447780 in words is "nine hundred ninety-two million, four hundred forty-seven thousand, seven hundred eighty".