13499427 has 4 divisors (see below), whose sum is σ = 17999240. Its totient is φ = 8999616.

The previous prime is 13499407. The next prime is 13499449. The reversal of 13499427 is 72499431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72499431 = 3 ⋅24166477.

It is not a de Polignac number, because 13499427 - 2¹⁵ = 13466659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13499407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2249902 + ... + 2249907.

It is an arithmetic number, because the mean of its divisors is an integer number (4499810).

Almost surely, 2^13499427 is an apocalyptic number.

13499427 is a deficient number, since it is larger than the sum of its proper divisors (4499813).

13499427 is an equidigital number, since it uses as much as digits as its factorization.

13499427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499812.

The product of its digits is 54432, while the sum is 39.

The square root of 13499427 is about 3674.1566379239. The cubic root of 13499427 is about 238.1067889298.

The spelling of 13499427 in words is "thirteen million, four hundred ninety-nine thousand, four hundred twenty-seven".