980957689 has 4 divisors (see below), whose sum is σ = 983142900. Its totient is φ = 978772480.

The previous prime is 980957671. The next prime is 980957717. The reversal of 980957689 is 986759089.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 327899664 + 653058025 = 18108^2 + 25555^2 .

It is a cyclic number.

It is not a de Polignac number, because 980957689 - 2⁵ = 980957657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980957639) 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, 1091932 + ... + 1092829.

It is an arithmetic number, because the mean of its divisors is an integer number (245785725).

Almost surely, 2^980957689 is an apocalyptic number.

It is an amenable number.

980957689 is a deficient number, since it is larger than the sum of its proper divisors (2185211).

980957689 is a wasteful number, since it uses less digits than its factorization.

980957689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185210.

The product of its (nonzero) digits is 9797760, while the sum is 61.

The square root of 980957689 is about 31320.2440763159. The cubic root of 980957689 is about 993.6118413260.

The spelling of 980957689 in words is "nine hundred eighty million, nine hundred fifty-seven thousand, six hundred eighty-nine".