989894748 has 12 divisors (see below), whose sum is σ = 2309754440. Its totient is φ = 329964912.

The previous prime is 989894747. The next prime is 989894749. The reversal of 989894748 is 847498989.

It is an interprime number because it is at equal distance from previous prime (989894747) and next prime (989894749).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×989894748² = 1959783224235967008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989894747) 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, 41245603 + ... + 41245626.

Almost surely, 2^989894748 is an apocalyptic number.

It is an amenable number.

989894748 is an abundant number, since it is smaller than the sum of its proper divisors (1319859692).

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

989894748 is a wasteful number, since it uses less digits than its factorization.

989894748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82491236 (or 82491234 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 66.

The square root of 989894748 is about 31462.5928365734. The cubic root of 989894748 is about 996.6201723009.

The spelling of 989894748 in words is "nine hundred eighty-nine million, eight hundred ninety-four thousand, seven hundred forty-eight".