214997009 has 2 divisors, whose sum is σ = 214997010. Its totient is φ = 214997008.

The previous prime is 214996979. The next prime is 214997051. The reversal of 214997009 is 900799412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214534609 + 462400 = 14647^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 214997009 - 2²⁰ = 213948433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (214997089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107498504 + 107498505.

It is an arithmetic number, because the mean of its divisors is an integer number (107498505).

Almost surely, 2^214997009 is an apocalyptic number.

It is an amenable number.

214997009 is a deficient number, since it is larger than the sum of its proper divisors (1).

214997009 is an equidigital number, since it uses as much as digits as its factorization.

214997009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 214997009 is about 14662.7763060070. The cubic root of 214997009 is about 599.0698634514.

The spelling of 214997009 in words is "two hundred fourteen million, nine hundred ninety-seven thousand, nine".