13033989 has 6 divisors (see below), whose sum is σ = 18826886. Its totient is φ = 8689320.

The previous prime is 13033957. The next prime is 13034009. The reversal of 13033989 is 98933031.

13033989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9641025 + 3392964 = 3105^2 + 1842^2 .

It is not a de Polignac number, because 13033989 - 2⁵ = 13033957 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13033289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 724102 + ... + 724119.

Almost surely, 2^13033989 is an apocalyptic number.

It is an amenable number.

13033989 is a deficient number, since it is larger than the sum of its proper divisors (5792897).

13033989 is a wasteful number, since it uses less digits than its factorization.

13033989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448227 (or 1448224 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 13033989 is about 3610.2616248688. The cubic root of 13033989 is about 235.3382122716.

The spelling of 13033989 in words is "thirteen million, thirty-three thousand, nine hundred eighty-nine".