989440475 has 12 divisors (see below), whose sum is σ = 1253012064. Its totient is φ = 774709920.

The previous prime is 989440429. The next prime is 989440483. The reversal of 989440475 is 574044989.

It is a de Polignac number, because none of the positive numbers 2^k-989440475 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 419864 + ... + 422213.

It is an arithmetic number, because the mean of its divisors is an integer number (104417672).

Almost surely, 2^989440475 is an apocalyptic number.

989440475 is a deficient number, since it is larger than the sum of its proper divisors (263571589).

989440475 is a wasteful number, since it uses less digits than its factorization.

989440475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842134 (or 842129 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 989440475 is about 31455.3727525204. The cubic root of 989440475 is about 996.4676958518.

The spelling of 989440475 in words is "nine hundred eighty-nine million, four hundred forty thousand, four hundred seventy-five".