214442191 has 2 divisors, whose sum is σ = 214442192. Its totient is φ = 214442190.

The previous prime is 214442149. The next prime is 214442213. The reversal of 214442191 is 191244412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214442191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214448191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107221095 + 107221096.

It is an arithmetic number, because the mean of its divisors is an integer number (107221096).

Almost surely, 2^214442191 is an apocalyptic number.

214442191 is a deficient number, since it is larger than the sum of its proper divisors (1).

214442191 is an equidigital number, since it uses as much as digits as its factorization.

214442191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

The square root of 214442191 is about 14643.8448161676. The cubic root of 214442191 is about 598.5541026931.

The spelling of 214442191 in words is "two hundred fourteen million, four hundred forty-two thousand, one hundred ninety-one".