999892380 has 48 divisors (see below), whose sum is σ = 2803810464. Its totient is φ = 266246400.

The previous prime is 999892351. The next prime is 999892381. The reversal of 999892380 is 83298999.

It is a self number, because there is not a number n which added to its sum of digits gives 999892380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999892381) 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, 30174 + ... + 53946.

It is an arithmetic number, because the mean of its divisors is an integer number (58412718).

Almost surely, 2^999892380 is an apocalyptic number.

It is an amenable number.

999892380 is an abundant number, since it is smaller than the sum of its proper divisors (1803918084).

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

999892380 is a wasteful number, since it uses less digits than its factorization.

999892380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24486 (or 24484 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 57.

The square root of 999892380 is about 31621.0749342903. The cubic root of 999892380 is about 999.9641253797.

It can be divided in two parts, 9998 and 92380, that added together give a triangular number (102378 = T₄₅₂).

The spelling of 999892380 in words is "nine hundred ninety-nine million, eight hundred ninety-two thousand, three hundred eighty".