258388869 has 8 divisors (see below), whose sum is σ = 356398560. Its totient is φ = 166319216.

The previous prime is 258388859. The next prime is 258388883. The reversal of 258388869 is 968883852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 258388869 - 2⁹ = 258388357 is a prime.

It is a super-2 number, since 2×258388869² = 133529615246198322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258388859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484907 + ... + 1485080.

It is an arithmetic number, because the mean of its divisors is an integer number (44549820).

Almost surely, 2^258388869 is an apocalyptic number.

258388869 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

258388869 is a deficient number, since it is larger than the sum of its proper divisors (98009691).

258388869 is a wasteful number, since it uses less digits than its factorization.

258388869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970019.

The product of its digits is 6635520, while the sum is 57.

The square root of 258388869 is about 16074.4788095913. The cubic root of 258388869 is about 636.9293575604.

The spelling of 258388869 in words is "two hundred fifty-eight million, three hundred eighty-eight thousand, eight hundred sixty-nine".