13897966 has 16 divisors (see below), whose sum is σ = 21379680. Its totient is φ = 6773760.

The previous prime is 13897943. The next prime is 13897997. The reversal of 13897966 is 66979831.

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 7 ways as a sum of consecutive naturals, for example, 13270 + ... + 14278.

It is an arithmetic number, because the mean of its divisors is an integer number (1336230).

Almost surely, 2^13897966 is an apocalyptic number.

13897966 is a deficient number, since it is larger than the sum of its proper divisors (7481714).

13897966 is a wasteful number, since it uses less digits than its factorization.

13897966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179.

The product of its digits is 489888, while the sum is 49.

The square root of 13897966 is about 3727.9975858361. The cubic root of 13897966 is about 240.4272828192.

The spelling of 13897966 in words is "thirteen million, eight hundred ninety-seven thousand, nine hundred sixty-six".