992489400 has 288 divisors, whose sum is σ = 3837075840. Its totient is φ = 225204480.

The previous prime is 992489387. The next prime is 992489401. The reversal of 992489400 is 4984299.

It is a super-2 number, since 2×992489400² = 1970070418224720000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992489401) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2860027 + ... + 2860373.

It is an arithmetic number, because the mean of its divisors is an integer number (13323180).

Almost surely, 2^992489400 is an apocalyptic number.

992489400 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 992489400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1918537920).

992489400 is an abundant number, since it is smaller than the sum of its proper divisors (2844586440).

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

992489400 is a wasteful number, since it uses less digits than its factorization.

992489400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 992489400 is about 31503.7997708213. The cubic root of 992489400 is about 997.4901727036.

The spelling of 992489400 in words is "nine hundred ninety-two million, four hundred eighty-nine thousand, four hundred".