259948649 has 8 divisors (see below), whose sum is σ = 277966728. Its totient is φ = 242233600.

The previous prime is 259948639. The next prime is 259948673. The reversal of 259948649 is 946849952.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 206439424 + 53509225 = 14368^2 + 7315^2 .

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 259948649 - 2⁸ = 259948393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 259948594 and 259948603.

It is not an unprimeable number, because it can be changed into a prime (259948639) 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, 73982 + ... + 77415.

It is an arithmetic number, because the mean of its divisors is an integer number (34745841).

Almost surely, 2^259948649 is an apocalyptic number.

It is an amenable number.

259948649 is a deficient number, since it is larger than the sum of its proper divisors (18018079).

259948649 is a wasteful number, since it uses less digits than its factorization.

259948649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151515.

The product of its digits is 5598720, while the sum is 56.

The square root of 259948649 is about 16122.9230910527. The cubic root of 259948649 is about 638.2084081478.

It can be divided in two parts, 25994 and 8649, that added together give a palindrome (34643).

The spelling of 259948649 in words is "two hundred fifty-nine million, nine hundred forty-eight thousand, six hundred forty-nine".