13439065 has 4 divisors (see below), whose sum is σ = 16126884. Its totient is φ = 10751248.

The previous prime is 13439053. The next prime is 13439071. The reversal of 13439065 is 56093431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56093431 = 157 ⋅357283.

It can be written as a sum of positive squares in 2 ways, for example, as 7033104 + 6405961 = 2652^2 + 2531^2 .

It is a cyclic number.

It is not a de Polignac number, because 13439065 - 2⁵ = 13439033 is a prime.

It is a Duffinian number.

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, 1343902 + ... + 1343911.

It is an arithmetic number, because the mean of its divisors is an integer number (4031721).

Almost surely, 2^13439065 is an apocalyptic number.

It is an amenable number.

13439065 is a deficient number, since it is larger than the sum of its proper divisors (2687819).

13439065 is an equidigital number, since it uses as much as digits as its factorization.

13439065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687818.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 13439065 is about 3665.9330326671. The cubic root of 13439065 is about 237.7513645233.

The spelling of 13439065 in words is "thirteen million, four hundred thirty-nine thousand, sixty-five".