259916474 has 4 divisors (see below), whose sum is σ = 389874714. Its totient is φ = 129958236.

The previous prime is 259916443. The next prime is 259916479. The reversal of 259916474 is 474619952.

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

It can be written as a sum of positive squares in only one way, i.e., 221563225 + 38353249 = 14885^2 + 6193^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (259916479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64979117 + ... + 64979120.

Almost surely, 2^259916474 is an apocalyptic number.

259916474 is a deficient number, since it is larger than the sum of its proper divisors (129958240).

259916474 is a wasteful number, since it uses less digits than its factorization.

259916474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129958239.

The product of its digits is 544320, while the sum is 47.

The square root of 259916474 is about 16121.9252572390. The cubic root of 259916474 is about 638.1820757640.

The spelling of 259916474 in words is "two hundred fifty-nine million, nine hundred sixteen thousand, four hundred seventy-four".