14257639 has 12 divisors (see below), whose sum is σ = 15946632. Its totient is φ = 12642000.

The previous prime is 14257637. The next prime is 14257651. The reversal of 14257639 is 93675241.

It is not a de Polignac number, because 14257639 - 2¹ = 14257637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14257598 and 14257607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14257637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19989 + ... + 20689.

It is an arithmetic number, because the mean of its divisors is an integer number (1328886).

Almost surely, 2^14257639 is an apocalyptic number.

14257639 is a deficient number, since it is larger than the sum of its proper divisors (1688993).

14257639 is an equidigital number, since it uses as much as digits as its factorization.

14257639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 755 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 14257639 is about 3775.9288923389. The cubic root of 14257639 is about 242.4836932387.

The spelling of 14257639 in words is "fourteen million, two hundred fifty-seven thousand, six hundred thirty-nine".