13039861 has 8 divisors (see below), whose sum is σ = 13253184. Its totient is φ = 12828480.

The previous prime is 13039853. The next prime is 13039883. The reversal of 13039861 is 16893031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13039861 - 2³ = 13039853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13039841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18526 + ... + 19216.

It is an arithmetic number, because the mean of its divisors is an integer number (1656648).

Almost surely, 2^13039861 is an apocalyptic number.

It is an amenable number.

13039861 is a deficient number, since it is larger than the sum of its proper divisors (213323).

13039861 is a wasteful number, since it uses less digits than its factorization.

13039861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 13039861 is about 3611.0747707573. The cubic root of 13039861 is about 235.3735480518.

The spelling of 13039861 in words is "thirteen million, thirty-nine thousand, eight hundred sixty-one".