989613 has 12 divisors (see below), whose sum is σ = 1475968. Its totient is φ = 638280.

The previous prime is 989581. The next prime is 989623. The reversal of 989613 is 316989.

It is not a de Polignac number, because 989613 - 2⁵ = 989581 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

989613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1495 + ... + 2052.

2⁹⁸⁹⁶¹³ is an apocalyptic number.

989613 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

It is an amenable number.

989613 is a deficient number, since it is larger than the sum of its proper divisors (486355).

989613 is a wasteful number, since it uses less digits than its factorization.

989613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584 (or 3581 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 989613 is about 994.7929432802. The cubic root of 989613 is about 99.6525609256.

The spelling of 989613 in words is "nine hundred eighty-nine thousand, six hundred thirteen".