13489431 has 16 divisors (see below), whose sum is σ = 18918144. Its totient is φ = 8533184.

The previous prime is 13489429. The next prime is 13489481. The reversal of 13489431 is 13498431.

It is not a de Polignac number, because 13489431 - 2¹ = 13489429 is a prime.

It is a super-2 number, since 2×13489431² = 363929497407522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 13489392 and 13489401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13489481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8740 + ... + 10166.

It is an arithmetic number, because the mean of its divisors is an integer number (1182384).

Almost surely, 2^13489431 is an apocalyptic number.

13489431 is a deficient number, since it is larger than the sum of its proper divisors (5428713).

13489431 is a wasteful number, since it uses less digits than its factorization.

13489431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590.

The product of its digits is 10368, while the sum is 33.

The square root of 13489431 is about 3672.7960738380. The cubic root of 13489431 is about 238.0480036402.

The spelling of 13489431 in words is "thirteen million, four hundred eighty-nine thousand, four hundred thirty-one".