13920694 has 4 divisors (see below), whose sum is σ = 20881044. Its totient is φ = 6960346.

The previous prime is 13920679. The next prime is 13920713. The reversal of 13920694 is 49602931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49602931 = 7 ⋅7086133.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3480172 + ... + 3480175.

It is an arithmetic number, because the mean of its divisors is an integer number (5220261).

Almost surely, 2^13920694 is an apocalyptic number.

13920694 is a deficient number, since it is larger than the sum of its proper divisors (6960350).

13920694 is an equidigital number, since it uses as much as digits as its factorization.

13920694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6960349.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 13920694 is about 3731.0446258387. The cubic root of 13920694 is about 240.5582721366.

The spelling of 13920694 in words is "thirteen million, nine hundred twenty thousand, six hundred ninety-four".