259981147 has 4 divisors (see below), whose sum is σ = 260020336. Its totient is φ = 259941960.

The previous prime is 259981087. The next prime is 259981151. The reversal of 259981147 is 741189952.

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

It is a cyclic number.

It is not a de Polignac number, because 259981147 - 2⁷ = 259981019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 259981097 and 259981106.

It is not an unprimeable number, because it can be changed into a prime (259981157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6903 + ... + 23824.

It is an arithmetic number, because the mean of its divisors is an integer number (65005084).

Almost surely, 2^259981147 is an apocalyptic number.

259981147 is a deficient number, since it is larger than the sum of its proper divisors (39189).

259981147 is an equidigital number, since it uses as much as digits as its factorization.

259981147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39188.

The product of its digits is 181440, while the sum is 46.

The square root of 259981147 is about 16123.9308792862. The cubic root of 259981147 is about 638.2350026729.

The spelling of 259981147 in words is "two hundred fifty-nine million, nine hundred eighty-one thousand, one hundred forty-seven".