13963481 has 6 divisors (see below), whose sum is σ = 16243290. Its totient is φ = 11968656.

The previous prime is 13963447. The next prime is 13963483. The reversal of 13963481 is 18436931.

It can be written as a sum of positive squares in only one way, i.e., 12250000 + 1713481 = 3500^2 + 1309^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13963481 is a prime.

It is a super-2 number, since 2×13963481² = 389957603274722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13963483) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 142436 + ... + 142533.

It is an arithmetic number, because the mean of its divisors is an integer number (2707215).

Almost surely, 2^13963481 is an apocalyptic number.

It is an amenable number.

13963481 is a deficient number, since it is larger than the sum of its proper divisors (2279809).

13963481 is an equidigital number, since it uses as much as digits as its factorization.

13963481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284983 (or 284976 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 13963481 is about 3736.7741435629. The cubic root of 13963481 is about 240.8044820691.

The spelling of 13963481 in words is "thirteen million, nine hundred sixty-three thousand, four hundred eighty-one".