213416789 has 2 divisors, whose sum is σ = 213416790. Its totient is φ = 213416788.

The previous prime is 213416773. The next prime is 213416813. The reversal of 213416789 is 987614312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135536164 + 77880625 = 11642^2 + 8825^2 .

It is a cyclic number.

It is not a de Polignac number, because 213416789 - 2⁴ = 213416773 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213416729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106708394 + 106708395.

It is an arithmetic number, because the mean of its divisors is an integer number (106708395).

Almost surely, 2^213416789 is an apocalyptic number.

It is an amenable number.

213416789 is a deficient number, since it is larger than the sum of its proper divisors (1).

213416789 is an equidigital number, since it uses as much as digits as its factorization.

213416789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 213416789 is about 14608.7914969035. The cubic root of 213416789 is about 597.5985390956.

The spelling of 213416789 in words is "two hundred thirteen million, four hundred sixteen thousand, seven hundred eighty-nine".