13906919 has 8 divisors (see below), whose sum is σ = 15006432. Its totient is φ = 12811680.

The previous prime is 13906909. The next prime is 13906933. The reversal of 13906919 is 91960931.

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

It is a cyclic number.

It is not a de Polignac number, because 13906919 - 2²⁰ = 12858343 is a prime.

It is a super-2 number, since 2×13906919² = 386804792145122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13906909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10022 + ... + 11324.

It is an arithmetic number, because the mean of its divisors is an integer number (1875804).

Almost surely, 2^13906919 is an apocalyptic number.

13906919 is a deficient number, since it is larger than the sum of its proper divisors (1099513).

13906919 is a wasteful number, since it uses less digits than its factorization.

13906919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 13906919 is about 3729.1981711891. The cubic root of 13906919 is about 240.4788990871.

The spelling of 13906919 in words is "thirteen million, nine hundred six thousand, nine hundred nineteen".