989477613 has 40 divisors (see below), whose sum is σ = 1512228960. Its totient is φ = 644565600.

The previous prime is 989477609. The next prime is 989477647. The reversal of 989477613 is 316774989.

It is a happy number.

It is not a de Polignac number, because 989477613 - 2² = 989477609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 989477613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989477603) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 940938 + ... + 941988.

It is an arithmetic number, because the mean of its divisors is an integer number (37805724).

Almost surely, 2^989477613 is an apocalyptic number.

It is an amenable number.

989477613 is a deficient number, since it is larger than the sum of its proper divisors (522751347).

989477613 is a wasteful number, since it uses less digits than its factorization.

989477613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 1310 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 989477613 is about 31455.9630753852. The cubic root of 989477613 is about 996.4801629499.

The spelling of 989477613 in words is "nine hundred eighty-nine million, four hundred seventy-seven thousand, six hundred thirteen".