13966931 has 8 divisors (see below), whose sum is σ = 15524784. Its totient is φ = 12457120.

The previous prime is 13966879. The next prime is 13966949.

13966931 is nontrivially palindromic in base 10.

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

It is a de Polignac number, because none of the positive numbers 2^k-13966931 is a prime.

It is a super-2 number, since 2×13966931² = 390150323117522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13963931) 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 7 ways as a sum of consecutive naturals, for example, 11396 + ... + 12561.

It is an arithmetic number, because the mean of its divisors is an integer number (1940598).

Almost surely, 2^13966931 is an apocalyptic number.

13966931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13966931 is a deficient number, since it is larger than the sum of its proper divisors (1557853).

13966931 is a wasteful number, since it uses less digits than its factorization.

13966931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24021.

The product of its digits is 26244, while the sum is 38.

The square root of 13966931 is about 3737.2357431663. The cubic root of 13966931 is about 240.8243125362.

The spelling of 13966931 in words is "thirteen million, nine hundred sixty-six thousand, nine hundred thirty-one".