13964481 has 12 divisors (see below), whose sum is σ = 20918352. Its totient is φ = 9309492.

The previous prime is 13964453. The next prime is 13964491. The reversal of 13964481 is 18446931.

13964481 is a `hidden beast` number, since 1 + 3 + 9 + 644 + 8 + 1 = 666.

It is not a de Polignac number, because 13964481 - 2¹¹ = 13962433 is a prime.

It is a super-2 number, since 2×13964481² = 390013459198722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13964441) 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, 28491 + ... + 28976.

It is an arithmetic number, because the mean of its divisors is an integer number (1743196).

Almost surely, 2^13964481 is an apocalyptic number.

It is an amenable number.

13964481 is a deficient number, since it is larger than the sum of its proper divisors (6953871).

13964481 is an frugal number, since it uses more digits than its factorization.

13964481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57482 (or 57470 counting only the distinct ones).

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

The square root of 13964481 is about 3736.9079464177. The cubic root of 13964481 is about 240.8102303667.

It can be divided in two parts, 139 and 64481, that added together give a triangular number (64620 = T₃₅₉).

The spelling of 13964481 in words is "thirteen million, nine hundred sixty-four thousand, four hundred eighty-one".