13879971 has 64 divisors (see below), whose sum is σ = 25559040. Its totient is φ = 7270560.

The previous prime is 13879969. The next prime is 13879979. The reversal of 13879971 is 17997831.

It is not a de Polignac number, because 13879971 - 2¹ = 13879969 is a prime.

It is a super-3 number, since 3×13879971³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13879979) 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 63 ways as a sum of consecutive naturals, for example, 134706 + ... + 134808.

It is an arithmetic number, because the mean of its divisors is an integer number (399360).

Almost surely, 2^13879971 is an apocalyptic number.

13879971 is a deficient number, since it is larger than the sum of its proper divisors (11679069).

13879971 is a wasteful number, since it uses less digits than its factorization.

13879971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 167 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 13879971 is about 3725.5833100335. The cubic root of 13879971 is about 240.3234700837.

The spelling of 13879971 in words is "thirteen million, eight hundred seventy-nine thousand, nine hundred seventy-one".