14391857 has 2 divisors, whose sum is σ = 14391858. Its totient is φ = 14391856.

The previous prime is 14391851. The next prime is 14391887. The reversal of 14391857 is 75819341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8708401 + 5683456 = 2951^2 + 2384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14391857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14391857.

It is not a weakly prime, because it can be changed into another prime (14391851) 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 as a sum of consecutive naturals, namely, 7195928 + 7195929.

It is an arithmetic number, because the mean of its divisors is an integer number (7195929).

Almost surely, 2^14391857 is an apocalyptic number.

It is an amenable number.

14391857 is a deficient number, since it is larger than the sum of its proper divisors (1).

14391857 is an equidigital number, since it uses as much as digits as its factorization.

14391857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 14391857 is about 3793.6601060190. The cubic root of 14391857 is about 243.2422124994.

The spelling of 14391857 in words is "fourteen million, three hundred ninety-one thousand, eight hundred fifty-seven".