989478125 has 12 divisors (see below), whose sum is σ = 1236772404. Its totient is φ = 791580000.

The previous prime is 989478121. The next prime is 989478131. The reversal of 989478125 is 521874989.

It can be written as a sum of positive squares in 6 ways, for example, as 686335204 + 303142921 = 26198^2 + 17411^2 .

It is not a de Polignac number, because 989478125 - 2² = 989478121 is a prime.

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 not an unprimeable number, because it can be changed into a prime (989478121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155192 + ... + 161441.

It is an arithmetic number, because the mean of its divisors is an integer number (103064367).

Almost surely, 2^989478125 is an apocalyptic number.

It is an amenable number.

989478125 is a deficient number, since it is larger than the sum of its proper divisors (247294279).

989478125 is an frugal number, since it uses more digits than its factorization.

989478125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316658 (or 316638 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 53.

The square root of 989478125 is about 31455.9712137457. The cubic root of 989478125 is about 996.4803348243.

The spelling of 989478125 in words is "nine hundred eighty-nine million, four hundred seventy-eight thousand, one hundred twenty-five".