259987870 has 16 divisors (see below), whose sum is σ = 470199888. Its totient is φ = 103501440.

The previous prime is 259987853. The next prime is 259987873. The reversal of 259987870 is 78789952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259987873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59499 + ... + 63718.

It is an arithmetic number, because the mean of its divisors is an integer number (29387493).

Almost surely, 2^259987870 is an apocalyptic number.

259987870 is a deficient number, since it is larger than the sum of its proper divisors (210212018).

259987870 is a wasteful number, since it uses less digits than its factorization.

259987870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123435.

The product of its (nonzero) digits is 2540160, while the sum is 55.

The square root of 259987870 is about 16124.1393568773. The cubic root of 259987870 is about 638.2405041192.

The spelling of 259987870 in words is "two hundred fifty-nine million, nine hundred eighty-seven thousand, eight hundred seventy".