209401201 has 2 divisors, whose sum is σ = 209401202. Its totient is φ = 209401200.

The previous prime is 209401193. The next prime is 209401217. The reversal of 209401201 is 102104902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198669025 + 10732176 = 14095^2 + 3276^2 .

It is a cyclic number.

It is not a de Polignac number, because 209401201 - 2³ = 209401193 is a prime.

It is not a weakly prime, because it can be changed into another prime (209401301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104700600 + 104700601.

It is an arithmetic number, because the mean of its divisors is an integer number (104700601).

Almost surely, 2^209401201 is an apocalyptic number.

It is an amenable number.

209401201 is a deficient number, since it is larger than the sum of its proper divisors (1).

209401201 is an equidigital number, since it uses as much as digits as its factorization.

209401201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 209401201 is about 14470.7014688300. The cubic root of 209401201 is about 593.8267027630.

The spelling of 209401201 in words is "two hundred nine million, four hundred one thousand, two hundred one".