214964381 has 2 divisors, whose sum is σ = 214964382. Its totient is φ = 214964380.

The previous prime is 214964363. The next prime is 214964383. The reversal of 214964381 is 183469412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135932281 + 79032100 = 11659^2 + 8890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214964381 is a prime.

It is a super-2 number, since 2×214964381² = 92419370197426322, which contains 22 as substring.

Together with 214964383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214964383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107482190 + 107482191.

It is an arithmetic number, because the mean of its divisors is an integer number (107482191).

Almost surely, 2^214964381 is an apocalyptic number.

It is an amenable number.

214964381 is a deficient number, since it is larger than the sum of its proper divisors (1).

214964381 is an equidigital number, since it uses as much as digits as its factorization.

214964381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 214964381 is about 14661.6636504866. The cubic root of 214964381 is about 599.0395569207.

The spelling of 214964381 in words is "two hundred fourteen million, nine hundred sixty-four thousand, three hundred eighty-one".