210016397 has 2 divisors, whose sum is σ = 210016398. Its totient is φ = 210016396.

The previous prime is 210016393. The next prime is 210016421. The reversal of 210016397 is 793610012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207763396 + 2253001 = 14414^2 + 1501^2 .

It is a cyclic number.

It is not a de Polignac number, because 210016397 - 2² = 210016393 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210016393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105008198 + 105008199.

It is an arithmetic number, because the mean of its divisors is an integer number (105008199).

Almost surely, 2^210016397 is an apocalyptic number.

It is an amenable number.

210016397 is a deficient number, since it is larger than the sum of its proper divisors (1).

210016397 is an equidigital number, since it uses as much as digits as its factorization.

210016397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 210016397 is about 14491.9424853951. The cubic root of 210016397 is about 594.4076651099.

The spelling of 210016397 in words is "two hundred ten million, sixteen thousand, three hundred ninety-seven".