989078125 has 28 divisors (see below), whose sum is σ = 1413106912. Its totient is φ = 678150000.

The previous prime is 989078119. The next prime is 989078141. The reversal of 989078125 is 521870989.

It is not a de Polignac number, because 989078125 - 2¹³ = 989069933 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 104854 + ... + 113896.

It is an arithmetic number, because the mean of its divisors is an integer number (50468104).

Almost surely, 2^989078125 is an apocalyptic number.

It is an amenable number.

989078125 is a deficient number, since it is larger than the sum of its proper divisors (424028787).

989078125 is an frugal number, since it uses more digits than its factorization.

989078125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9080 (or 9055 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 989078125 is about 31449.6124777397. The cubic root of 989078125 is about 996.3460398370.

The spelling of 989078125 in words is "nine hundred eighty-nine million, seventy-eight thousand, one hundred twenty-five".