14139481 has 2 divisors, whose sum is σ = 14139482. Its totient is φ = 14139480.

The previous prime is 14139473. The next prime is 14139487. The reversal of 14139481 is 18493141.

14139481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13995081 + 144400 = 3741^2 + 380^2 .

It is an emirp because it is prime and its reverse (18493141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14139481 - 2³ = 14139473 is a prime.

It is a super-2 number, since 2×14139481² = 399849845898722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14139487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7069740 + 7069741.

It is an arithmetic number, because the mean of its divisors is an integer number (7069741).

Almost surely, 2^14139481 is an apocalyptic number.

It is an amenable number.

14139481 is a deficient number, since it is larger than the sum of its proper divisors (1).

14139481 is an equidigital number, since it uses as much as digits as its factorization.

14139481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 14139481 is about 3760.2501246593. The cubic root of 14139481 is about 241.8119854229.

The spelling of 14139481 in words is "fourteen million, one hundred thirty-nine thousand, four hundred eighty-one".