13849904639 has 8 divisors (see below), whose sum is σ = 14226305328. Its totient is φ = 13473613440.

The previous prime is 13849904603. The next prime is 13849904647. The reversal of 13849904639 is 93640994831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13849904639 - 2²⁴ = 13833127423 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 (13849904239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273284 + ... + 319974.

It is an arithmetic number, because the mean of its divisors is an integer number (1778288166).

Almost surely, 2^13849904639 is an apocalyptic number.

13849904639 is a deficient number, since it is larger than the sum of its proper divisors (376400689).

13849904639 is an equidigital number, since it uses as much as digits as its factorization.

13849904639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54745.

The product of its (nonzero) digits is 5038848, while the sum is 56.

The spelling of 13849904639 in words is "thirteen billion, eight hundred forty-nine million, nine hundred four thousand, six hundred thirty-nine".