13971975 has 24 divisors (see below), whose sum is σ = 23226192. Its totient is φ = 7411200.

The previous prime is 13971959. The next prime is 13972003. The reversal of 13971975 is 57917931.

It is not a de Polignac number, because 13971975 - 2⁴ = 13971959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17689 + ... + 18461.

It is an arithmetic number, because the mean of its divisors is an integer number (967758).

Almost surely, 2^13971975 is an apocalyptic number.

13971975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13971975 is a deficient number, since it is larger than the sum of its proper divisors (9254217).

13971975 is a wasteful number, since it uses less digits than its factorization.

13971975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027 (or 1022 counting only the distinct ones).

The product of its digits is 59535, while the sum is 42.

The square root of 13971975 is about 3737.9105125725. The cubic root of 13971975 is about 240.8532993774.

The spelling of 13971975 in words is "thirteen million, nine hundred seventy-one thousand, nine hundred seventy-five".