13005391 has 16 divisors (see below), whose sum is σ = 15833664. Its totient is φ = 10427904.

The previous prime is 13005371. The next prime is 13005397. The reversal of 13005391 is 19350031.

It is a cyclic number.

It is not a de Polignac number, because 13005391 - 2⁵ = 13005359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13005397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34681 + ... + 35053.

It is an arithmetic number, because the mean of its divisors is an integer number (989604).

Almost surely, 2^13005391 is an apocalyptic number.

13005391 is a deficient number, since it is larger than the sum of its proper divisors (2828273).

13005391 is a wasteful number, since it uses less digits than its factorization.

13005391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 13005391 is about 3606.2987951638. The cubic root of 13005391 is about 235.1659669605.

The spelling of 13005391 in words is "thirteen million, five thousand, three hundred ninety-one".