258911989 has 16 divisors (see below), whose sum is σ = 326930688. Its totient is φ = 199786752.

The previous prime is 258911953. The next prime is 258912011. The reversal of 258911989 is 989119852.

It is a cyclic number.

It is not a de Polignac number, because 258911989 - 2¹³ = 258903797 is a prime.

It is a super-2 number, since 2×258911989² = 134070836095872242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258911909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44562 + ... + 50035.

It is an arithmetic number, because the mean of its divisors is an integer number (20433168).

Almost surely, 2^258911989 is an apocalyptic number.

It is an amenable number.

258911989 is a deficient number, since it is larger than the sum of its proper divisors (68018699).

258911989 is a wasteful number, since it uses less digits than its factorization.

258911989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94644.

The product of its digits is 466560, while the sum is 52.

The square root of 258911989 is about 16090.7423383758. The cubic root of 258911989 is about 637.3588986191.

The spelling of 258911989 in words is "two hundred fifty-eight million, nine hundred eleven thousand, nine hundred eighty-nine".