214239997 has 2 divisors, whose sum is σ = 214239998. Its totient is φ = 214239996.

The previous prime is 214239941. The next prime is 214240031. The reversal of 214239997 is 799932412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171976996 + 42263001 = 13114^2 + 6501^2 .

It is a cyclic number.

It is not a de Polignac number, because 214239997 - 2¹¹ = 214237949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214239397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107119998 + 107119999.

It is an arithmetic number, because the mean of its divisors is an integer number (107119999).

Almost surely, 2^214239997 is an apocalyptic number.

It is an amenable number.

214239997 is a deficient number, since it is larger than the sum of its proper divisors (1).

214239997 is an equidigital number, since it uses as much as digits as its factorization.

214239997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 214239997 is about 14636.9394683451. The cubic root of 214239997 is about 598.3659212773.

The spelling of 214239997 in words is "two hundred fourteen million, two hundred thirty-nine thousand, nine hundred ninety-seven".