989887392 has 240 divisors, whose sum is σ = 3246483240. Its totient is φ = 293787648.

The previous prime is 989887369. The next prime is 989887397. The reversal of 989887392 is 293788989.

It can be written as a sum of positive squares in 4 ways, for example, as 338412816 + 651474576 = 18396^2 + 25524^2 .

It is not an unprimeable number, because it can be changed into a prime (989887397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 976678 + ... + 977690.

Almost surely, 2^989887392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989887392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1623241620).

989887392 is an abundant number, since it is smaller than the sum of its proper divisors (2256595848).

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

989887392 is a wasteful number, since it uses less digits than its factorization.

989887392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077 (or 1060 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 63.

The square root of 989887392 is about 31462.4759356285. The cubic root of 989887392 is about 996.6177036357.

The spelling of 989887392 in words is "nine hundred eighty-nine million, eight hundred eighty-seven thousand, three hundred ninety-two".