13085913 has 4 divisors (see below), whose sum is σ = 17447888. Its totient is φ = 8723940.

The previous prime is 13085899. The next prime is 13085921. The reversal of 13085913 is 31958031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13085913 - 2¹³ = 13077721 is a prime.

It is a super-2 number, since 2×13085913² = 342482238087138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13085923) 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, 2180983 + ... + 2180988.

It is an arithmetic number, because the mean of its divisors is an integer number (4361972).

Almost surely, 2^13085913 is an apocalyptic number.

It is an amenable number.

13085913 is a deficient number, since it is larger than the sum of its proper divisors (4361975).

13085913 is an equidigital number, since it uses as much as digits as its factorization.

13085913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361974.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 13085913 is about 3617.4456457561. The cubic root of 13085913 is about 235.6503068129.

The spelling of 13085913 in words is "thirteen million, eighty-five thousand, nine hundred thirteen".