13981413 has 4 divisors (see below), whose sum is σ = 18641888. Its totient is φ = 9320940.

The previous prime is 13981399. The next prime is 13981417. The reversal of 13981413 is 31418931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13981413 - 2⁵ = 13981381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981417) 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, 2330233 + ... + 2330238.

It is an arithmetic number, because the mean of its divisors is an integer number (4660472).

Almost surely, 2^13981413 is an apocalyptic number.

It is an amenable number.

13981413 is a deficient number, since it is larger than the sum of its proper divisors (4660475).

13981413 is an equidigital number, since it uses as much as digits as its factorization.

13981413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660474.

The product of its digits is 2592, while the sum is 30.

The square root of 13981413 is about 3739.1727694772. The cubic root of 13981413 is about 240.9075189084.

The spelling of 13981413 in words is "thirteen million, nine hundred eighty-one thousand, four hundred thirteen".