14857639 has 8 divisors (see below), whose sum is σ = 15675440. Its totient is φ = 14043456.

The previous prime is 14857631. The next prime is 14857651. The reversal of 14857639 is 93675841.

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 14857639 - 2³ = 14857631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14857595 and 14857604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14857631) 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, 13867 + ... + 14899.

It is an arithmetic number, because the mean of its divisors is an integer number (1959430).

Almost surely, 2^14857639 is an apocalyptic number.

14857639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

14857639 is a deficient number, since it is larger than the sum of its proper divisors (817801).

14857639 is a wasteful number, since it uses less digits than its factorization.

14857639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809.

The product of its digits is 181440, while the sum is 43.

The square root of 14857639 is about 3854.5608050723. The cubic root of 14857639 is about 245.8385207243.

The spelling of 14857639 in words is "fourteen million, eight hundred fifty-seven thousand, six hundred thirty-nine".