14639381 has 4 divisors (see below), whose sum is σ = 14751264. Its totient is φ = 14527500.

The previous prime is 14639353. The next prime is 14639407. The reversal of 14639381 is 18393641.

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 a cyclic number.

It is not a de Polignac number, because 14639381 - 2¹⁴ = 14622997 is a prime.

It is a super-2 number, since 2×14639381² = 428622952126322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14639321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55745 + ... + 56006.

It is an arithmetic number, because the mean of its divisors is an integer number (3687816).

Almost surely, 2^14639381 is an apocalyptic number.

It is an amenable number.

14639381 is a deficient number, since it is larger than the sum of its proper divisors (111883).

14639381 is a wasteful number, since it uses less digits than its factorization.

14639381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111882.

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

The square root of 14639381 is about 3826.1444039660. The cubic root of 14639381 is about 244.6287922905.

The spelling of 14639381 in words is "fourteen million, six hundred thirty-nine thousand, three hundred eighty-one".