13039971 has 16 divisors (see below), whose sum is σ = 19987200. Its totient is φ = 7407648.

The previous prime is 13039967. The next prime is 13039973. The reversal of 13039971 is 17993031.

It is not a de Polignac number, because 13039971 - 2² = 13039967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13039973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2025 + ... + 5493.

It is an arithmetic number, because the mean of its divisors is an integer number (1249200).

Almost surely, 2^13039971 is an apocalyptic number.

13039971 is a deficient number, since it is larger than the sum of its proper divisors (6947229).

13039971 is a wasteful number, since it uses less digits than its factorization.

13039971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658.

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 13039971 is about 3611.0900016477. The cubic root of 13039971 is about 235.3742098947.

The spelling of 13039971 in words is "thirteen million, thirty-nine thousand, nine hundred seventy-one".