259846406 has 4 divisors (see below), whose sum is σ = 389769612. Its totient is φ = 129923202.

The previous prime is 259846403. The next prime is 259846417. The reversal of 259846406 is 604648952.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×259846406² = 135040309422233672, 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 (259846403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64961600 + ... + 64961603.

It is an arithmetic number, because the mean of its divisors is an integer number (97442403).

Almost surely, 2^259846406 is an apocalyptic number.

259846406 is a deficient number, since it is larger than the sum of its proper divisors (129923206).

259846406 is a wasteful number, since it uses less digits than its factorization.

259846406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129923205.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 259846406 is about 16119.7520452394. The cubic root of 259846406 is about 638.1247238004.

The spelling of 259846406 in words is "two hundred fifty-nine million, eight hundred forty-six thousand, four hundred six".