13857393 has 8 divisors (see below), whose sum is σ = 20156256. Its totient is φ = 8398400.

The previous prime is 13857383. The next prime is 13857401. The reversal of 13857393 is 39375831.

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 13857393 - 2⁹ = 13856881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13857343) 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 7 ways as a sum of consecutive naturals, for example, 209928 + ... + 209993.

It is an arithmetic number, because the mean of its divisors is an integer number (2519532).

Almost surely, 2^13857393 is an apocalyptic number.

It is an amenable number.

13857393 is a deficient number, since it is larger than the sum of its proper divisors (6298863).

13857393 is a wasteful number, since it uses less digits than its factorization.

13857393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419935.

The product of its digits is 68040, while the sum is 39.

The square root of 13857393 is about 3722.5519472534. The cubic root of 13857393 is about 240.1930911353.

It can be divided in two parts, 1385 and 7393, that added together give a palindrome (8778).

The spelling of 13857393 in words is "thirteen million, eight hundred fifty-seven thousand, three hundred ninety-three".