214557839 has 2 divisors, whose sum is σ = 214557840. Its totient is φ = 214557838.

The previous prime is 214557803. The next prime is 214557883. The reversal of 214557839 is 938755412.

It is an a-pointer prime, because the next prime (214557883) can be obtained adding 214557839 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214557839 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 214557839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214550839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107278919 + 107278920.

It is an arithmetic number, because the mean of its divisors is an integer number (107278920).

Almost surely, 2^214557839 is an apocalyptic number.

214557839 is a deficient number, since it is larger than the sum of its proper divisors (1).

214557839 is an equidigital number, since it uses as much as digits as its factorization.

214557839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 44.

The square root of 214557839 is about 14647.7929736872. The cubic root of 214557839 is about 598.6616828054.

The spelling of 214557839 in words is "two hundred fourteen million, five hundred fifty-seven thousand, eight hundred thirty-nine".