13981446 has 24 divisors (see below), whose sum is σ = 32075784. Its totient is φ = 4386240.

The previous prime is 13981441. The next prime is 13981459. The reversal of 13981446 is 64418931.

13981446 is a `hidden beast` number, since 139 + 81 + 446 = 666.

13981446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13981446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22540 + ... + 23151.

It is an arithmetic number, because the mean of its divisors is an integer number (1336491).

Almost surely, 2^13981446 is an apocalyptic number.

13981446 is an abundant number, since it is smaller than the sum of its proper divisors (18094338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13981446 is a wasteful number, since it uses less digits than its factorization.

13981446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45716 (or 45713 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 13981446 is about 3739.1771822154. The cubic root of 13981446 is about 240.9077084443.

The spelling of 13981446 in words is "thirteen million, nine hundred eighty-one thousand, four hundred forty-six".