14215387 has 2 divisors, whose sum is σ = 14215388. Its totient is φ = 14215386.

The previous prime is 14215381. The next prime is 14215459. The reversal of 14215387 is 78351241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14215387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14215381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7107693 + 7107694.

It is an arithmetic number, because the mean of its divisors is an integer number (7107694).

Almost surely, 2^14215387 is an apocalyptic number.

14215387 is a deficient number, since it is larger than the sum of its proper divisors (1).

14215387 is an equidigital number, since it uses as much as digits as its factorization.

14215387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 14215387 is about 3770.3298264210. The cubic root of 14215387 is about 242.2439256692.

The spelling of 14215387 in words is "fourteen million, two hundred fifteen thousand, three hundred eighty-seven".