258985972 has 18 divisors (see below), whose sum is σ = 527221842. Its totient is φ = 110993904.

The previous prime is 258985949. The next prime is 258985999. The reversal of 258985972 is 279589852.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 258759396 + 226576 = 16086^2 + 476^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 660483 + ... + 660874.

Almost surely, 2^258985972 is an apocalyptic number.

It is an amenable number.

258985972 is an abundant number, since it is smaller than the sum of its proper divisors (268235870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258985972 is a wasteful number, since it uses less digits than its factorization.

258985972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321375 (or 1321366 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 55.

The square root of 258985972 is about 16093.0411047757. The cubic root of 258985972 is about 637.4196003694.

The spelling of 258985972 in words is "two hundred fifty-eight million, nine hundred eighty-five thousand, nine hundred seventy-two".