13977946 has 8 divisors (see below), whose sum is σ = 20993364. Its totient is φ = 6980160.

The previous prime is 13977923. The next prime is 13977949. The reversal of 13977946 is 64977931.

13977946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12852225 + 1125721 = 3585^2 + 1061^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 13977896 and 13977905.

It is not an unprimeable number, because it can be changed into a prime (13977949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2205 + ... + 5728.

Almost surely, 2^13977946 is an apocalyptic number.

13977946 is a deficient number, since it is larger than the sum of its proper divisors (7015418).

13977946 is an equidigital number, since it uses as much as digits as its factorization.

13977946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8816.

The product of its digits is 285768, while the sum is 46.

The square root of 13977946 is about 3738.7091355172. The cubic root of 13977946 is about 240.8876044830.

The spelling of 13977946 in words is "thirteen million, nine hundred seventy-seven thousand, nine hundred forty-six".