2589778897 has 4 divisors (see below), whose sum is σ = 2591210736. Its totient is φ = 2588347060.

The previous prime is 2589778859. The next prime is 2589778901. The reversal of 2589778897 is 7988779852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2589778897 - 2¹⁵ = 2589746129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2589778837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713203 + ... + 716824.

It is an arithmetic number, because the mean of its divisors is an integer number (647802684).

Almost surely, 2^2589778897 is an apocalyptic number.

It is an amenable number.

2589778897 is a deficient number, since it is larger than the sum of its proper divisors (1431839).

2589778897 is a wasteful number, since it uses less digits than its factorization.

2589778897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431838.

The product of its digits is 142248960, while the sum is 70.

The square root of 2589778897 is about 50889.8702788679. The cubic root of 2589778897 is about 1373.2646134682.

The spelling of 2589778897 in words is "two billion, five hundred eighty-nine million, seven hundred seventy-eight thousand, eight hundred ninety-seven".