13499091 has 12 divisors (see below), whose sum is σ = 20346768. Its totient is φ = 8607984.

The previous prime is 13499089. The next prime is 13499099. The reversal of 13499091 is 19099431.

It is not a de Polignac number, because 13499091 - 2¹ = 13499089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13499099) 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, 32400 + ... + 32813.

It is an arithmetic number, because the mean of its divisors is an integer number (1695564).

Almost surely, 2^13499091 is an apocalyptic number.

13499091 is a deficient number, since it is larger than the sum of its proper divisors (6847677).

13499091 is a wasteful number, since it uses less digits than its factorization.

13499091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65242 (or 65239 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 13499091 is about 3674.1109128604. The cubic root of 13499091 is about 238.1048134251.

It can be divided in two parts, 1349 and 9091, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 13499091 in words is "thirteen million, four hundred ninety-nine thousand, ninety-one".