258869311 has 2 divisors, whose sum is σ = 258869312. Its totient is φ = 258869310.

The previous prime is 258869297. The next prime is 258869329. The reversal of 258869311 is 113968852.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258869311 is a prime.

It is a super-2 number, since 2×258869311² = 134026640355229442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258869381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129434655 + 129434656.

It is an arithmetic number, because the mean of its divisors is an integer number (129434656).

Almost surely, 2^258869311 is an apocalyptic number.

258869311 is a deficient number, since it is larger than the sum of its proper divisors (1).

258869311 is an equidigital number, since it uses as much as digits as its factorization.

258869311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 43.

The square root of 258869311 is about 16089.4161174357. The cubic root of 258869311 is about 637.3238768112.

The spelling of 258869311 in words is "two hundred fifty-eight million, eight hundred sixty-nine thousand, three hundred eleven".