989617145 has 16 divisors (see below), whose sum is σ = 1297124928. Its totient is φ = 718818240.

The previous prime is 989617087. The next prime is 989617151. The reversal of 989617145 is 541716989.

It is not a de Polignac number, because 989617145 - 2⁸ = 989616889 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 989617093 and 989617102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34607 + ... + 56363.

It is an arithmetic number, because the mean of its divisors is an integer number (81070308).

Almost surely, 2^989617145 is an apocalyptic number.

It is an amenable number.

989617145 is a deficient number, since it is larger than the sum of its proper divisors (307507783).

989617145 is a wasteful number, since it uses less digits than its factorization.

989617145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22600.

The product of its digits is 544320, while the sum is 50.

The square root of 989617145 is about 31458.1808914629. The cubic root of 989617145 is about 996.5270005718.

The spelling of 989617145 in words is "nine hundred eighty-nine million, six hundred seventeen thousand, one hundred forty-five".