13489388 has 12 divisors (see below), whose sum is σ = 25752552. Its totient is φ = 6131520.

The previous prime is 13489351. The next prime is 13489393. The reversal of 13489388 is 88398431.

It is a super-2 number, since 2×13489388² = 363927177229088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 306577 = 13489388 / (1 + 3 + 4 + 8 + 9 + 3 + 8 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153245 + ... + 153332.

It is an arithmetic number, because the mean of its divisors is an integer number (2146046).

Almost surely, 2^13489388 is an apocalyptic number.

It is an amenable number.

13489388 is a deficient number, since it is larger than the sum of its proper divisors (12263164).

13489388 is a wasteful number, since it uses less digits than its factorization.

13489388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306592 (or 306590 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 13489388 is about 3672.7902199826. The cubic root of 13489388 is about 238.0477506996.

The spelling of 13489388 in words is "thirteen million, four hundred eighty-nine thousand, three hundred eighty-eight".