989678125 has 12 divisors (see below), whose sum is σ = 1237022388. Its totient is φ = 791740000.

The previous prime is 989678101. The next prime is 989678149. The reversal of 989678125 is 521876989.

It is an interprime number because it is at equal distance from previous prime (989678101) and next prime (989678149).

It can be written as a sum of positive squares in 6 ways, for example, as 982634409 + 7043716 = 31347^2 + 2654^2 .

It is not a de Polignac number, because 989678125 - 2⁹ = 989677613 is a prime.

It is a super-2 number, since 2×989678125² = 1958925582207031250, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155224 + ... + 161473.

It is an arithmetic number, because the mean of its divisors is an integer number (103085199).

Almost surely, 2^989678125 is an apocalyptic number.

It is an amenable number.

989678125 is a deficient number, since it is larger than the sum of its proper divisors (247344263).

989678125 is an frugal number, since it uses more digits than its factorization.

989678125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316722 (or 316702 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 55.

The square root of 989678125 is about 31459.1500997722. The cubic root of 989678125 is about 996.5474687460.

The spelling of 989678125 in words is "nine hundred eighty-nine million, six hundred seventy-eight thousand, one hundred twenty-five".