259978723 has 4 divisors (see below), whose sum is σ = 260245800. Its totient is φ = 259711648.

The previous prime is 259978711. The next prime is 259978751. The reversal of 259978723 is 327879952.

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 259978723 - 2⁹ = 259978211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259978793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132073 + ... + 134026.

It is an arithmetic number, because the mean of its divisors is an integer number (65061450).

Almost surely, 2^259978723 is an apocalyptic number.

259978723 is a deficient number, since it is larger than the sum of its proper divisors (267077).

259978723 is an equidigital number, since it uses as much as digits as its factorization.

259978723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267076.

The product of its digits is 1905120, while the sum is 52.

The square root of 259978723 is about 16123.8557113365. The cubic root of 259978723 is about 638.2330190849.

The spelling of 259978723 in words is "two hundred fifty-nine million, nine hundred seventy-eight thousand, seven hundred twenty-three".