989475961 has 8 divisors (see below), whose sum is σ = 1006855200. Its totient is φ = 972117120.

The previous prime is 989475857. The next prime is 989475983. The reversal of 989475961 is 169574989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 989475961 - 2¹⁵ = 989443193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 989475896 and 989475905.

It is not an unprimeable number, because it can be changed into a prime (989475761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118750 + ... + 126808.

It is an arithmetic number, because the mean of its divisors is an integer number (125856900).

Almost surely, 2^989475961 is an apocalyptic number.

It is an amenable number.

989475961 is a deficient number, since it is larger than the sum of its proper divisors (17379239).

989475961 is a wasteful number, since it uses less digits than its factorization.

989475961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10199.

The product of its digits is 4898880, while the sum is 58.

The square root of 989475961 is about 31455.9368164421. The cubic root of 989475961 is about 996.4796083858.

The spelling of 989475961 in words is "nine hundred eighty-nine million, four hundred seventy-five thousand, nine hundred sixty-one".