13492989 has 6 divisors (see below), whose sum is σ = 19489886. Its totient is φ = 8995320.

The previous prime is 13492987. The next prime is 13493027. The reversal of 13492989 is 98929431.

It can be written as a sum of positive squares in only one way, i.e., 12320100 + 1172889 = 3510^2 + 1083^2 .

It is not a de Polignac number, because 13492989 - 2¹ = 13492987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13492981) 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, 749602 + ... + 749619.

Almost surely, 2^13492989 is an apocalyptic number.

It is an amenable number.

13492989 is a deficient number, since it is larger than the sum of its proper divisors (5996897).

13492989 is a wasteful number, since it uses less digits than its factorization.

13492989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499227 (or 1499224 counting only the distinct ones).

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

The square root of 13492989 is about 3673.2804140169. The cubic root of 13492989 is about 238.0689311436.

The spelling of 13492989 in words is "thirteen million, four hundred ninety-two thousand, nine hundred eighty-nine".