12739171 has 16 divisors (see below), whose sum is σ = 14542848. Its totient is φ = 11088000.

The previous prime is 12739163. The next prime is 12739183. The reversal of 12739171 is 17193721.

It is a cyclic number.

It is not a de Polignac number, because 12739171 - 2³ = 12739163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12739121) 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, 11596 + ... + 12646.

It is an arithmetic number, because the mean of its divisors is an integer number (908928).

Almost surely, 2^12739171 is an apocalyptic number.

12739171 is a deficient number, since it is larger than the sum of its proper divisors (1803677).

12739171 is a wasteful number, since it uses less digits than its factorization.

12739171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122.

The product of its digits is 2646, while the sum is 31.

The square root of 12739171 is about 3569.1975288572. The cubic root of 12739171 is about 233.5502782752.

The spelling of 12739171 in words is "twelve million, seven hundred thirty-nine thousand, one hundred seventy-one".