206459401 has 2 divisors, whose sum is σ = 206459402. Its totient is φ = 206459400.

The previous prime is 206459369. The next prime is 206459417. The reversal of 206459401 is 104954602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178623225 + 27836176 = 13365^2 + 5276^2 .

It is a cyclic number.

It is not a de Polignac number, because 206459401 - 2⁵ = 206459369 is a prime.

It is a super-2 number, since 2×206459401² = 85250968522557602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206459501) 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, 103229700 + 103229701.

It is an arithmetic number, because the mean of its divisors is an integer number (103229701).

Almost surely, 2^206459401 is an apocalyptic number.

It is an amenable number.

206459401 is a deficient number, since it is larger than the sum of its proper divisors (1).

206459401 is an equidigital number, since it uses as much as digits as its factorization.

206459401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 206459401 is about 14368.6951738841. The cubic root of 206459401 is about 591.0327607257.

The spelling of 206459401 in words is "two hundred six million, four hundred fifty-nine thousand, four hundred one".