214159993 has 2 divisors, whose sum is σ = 214159994. Its totient is φ = 214159992.

The previous prime is 214159991. The next prime is 214160017. The reversal of 214159993 is 399951412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115197289 + 98962704 = 10733^2 + 9948^2 .

It is a cyclic number.

It is not a de Polignac number, because 214159993 - 2¹ = 214159991 is a prime.

Together with 214159991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (214159991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107079996 + 107079997.

It is an arithmetic number, because the mean of its divisors is an integer number (107079997).

Almost surely, 2^214159993 is an apocalyptic number.

It is an amenable number.

214159993 is a deficient number, since it is larger than the sum of its proper divisors (1).

214159993 is an equidigital number, since it uses as much as digits as its factorization.

214159993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 43.

The square root of 214159993 is about 14634.2062647757. The cubic root of 214159993 is about 598.2914290754.

The spelling of 214159993 in words is "two hundred fourteen million, one hundred fifty-nine thousand, nine hundred ninety-three".