258741209 has 2 divisors, whose sum is σ = 258741210. Its totient is φ = 258741208.

The previous prime is 258741169. The next prime is 258741269. The reversal of 258741209 is 902147852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253701184 + 5040025 = 15928^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 258741209 - 2¹⁶ = 258675673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (258741269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129370604 + 129370605.

It is an arithmetic number, because the mean of its divisors is an integer number (129370605).

Almost surely, 2^258741209 is an apocalyptic number.

It is an amenable number.

258741209 is a deficient number, since it is larger than the sum of its proper divisors (1).

258741209 is an equidigital number, since it uses as much as digits as its factorization.

258741209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 258741209 is about 16085.4346848321. The cubic root of 258741209 is about 637.2187324643.

The spelling of 258741209 in words is "two hundred fifty-eight million, seven hundred forty-one thousand, two hundred nine".