259397479 has 4 divisors (see below), whose sum is σ = 282979080. Its totient is φ = 235815880.

The previous prime is 259397477. The next prime is 259397483. The reversal of 259397479 is 974793952.

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 259397479 - 2¹ = 259397477 is a prime.

It is a super-2 number, since 2×259397479² = 134574104223110882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259397471) 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, 11790784 + ... + 11790805.

It is an arithmetic number, because the mean of its divisors is an integer number (70744770).

Almost surely, 2^259397479 is an apocalyptic number.

259397479 is a deficient number, since it is larger than the sum of its proper divisors (23581601).

259397479 is a wasteful number, since it uses less digits than its factorization.

259397479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23581600.

The product of its digits is 4286520, while the sum is 55.

The square root of 259397479 is about 16105.8212767931. The cubic root of 259397479 is about 637.7570238244.

The spelling of 259397479 in words is "two hundred fifty-nine million, three hundred ninety-seven thousand, four hundred seventy-nine".