259997982 has 16 divisors (see below), whose sum is σ = 528521232. Its totient is φ = 85245120.

The previous prime is 259997981. The next prime is 259997987. The reversal of 259997982 is 289799952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259997981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354823 + ... + 355554.

It is an arithmetic number, because the mean of its divisors is an integer number (33032577).

Almost surely, 2^259997982 is an apocalyptic number.

259997982 is an abundant number, since it is smaller than the sum of its proper divisors (268523250).

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

259997982 is a wasteful number, since it uses less digits than its factorization.

259997982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710443.

The product of its digits is 7348320, while the sum is 60.

The square root of 259997982 is about 16124.4529209521. The cubic root of 259997982 is about 638.2487786133.

The spelling of 259997982 in words is "two hundred fifty-nine million, nine hundred ninety-seven thousand, nine hundred eighty-two".