2256719399 has 4 divisors (see below), whose sum is σ = 2461875720. Its totient is φ = 2051563080.

The previous prime is 2256719351. The next prime is 2256719401. The reversal of 2256719399 is 9939176522.

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 2256719399 - 2¹⁶ = 2256653863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2256719399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256719599) 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, 102578144 + ... + 102578165.

It is an arithmetic number, because the mean of its divisors is an integer number (615468930).

Almost surely, 2^2256719399 is an apocalyptic number.

2256719399 is a deficient number, since it is larger than the sum of its proper divisors (205156321).

2256719399 is a wasteful number, since it uses less digits than its factorization.

2256719399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205156320.

The product of its digits is 1837080, while the sum is 53.

The square root of 2256719399 is about 47504.9407851436. The cubic root of 2256719399 is about 1311.6738308938.

The spelling of 2256719399 in words is "two billion, two hundred fifty-six million, seven hundred nineteen thousand, three hundred ninety-nine".