13249989 has 12 divisors (see below), whose sum is σ = 19756672. Its totient is φ = 8548200.

The previous prime is 13249967. The next prime is 13249997. The reversal of 13249989 is 98994231.

13249989 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13249989 - 2¹³ = 13241797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13249189) 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, 23467 + ... + 24024.

Almost surely, 2^13249989 is an apocalyptic number.

It is an amenable number.

13249989 is a deficient number, since it is larger than the sum of its proper divisors (6506683).

13249989 is a wasteful number, since it uses less digits than its factorization.

13249989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47528 (or 47525 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 13249989 is about 3640.0534336737. The cubic root of 13249989 is about 236.6311090753.

The spelling of 13249989 in words is "thirteen million, two hundred forty-nine thousand, nine hundred eighty-nine".