3257889889 has 4 divisors (see below), whose sum is σ = 3337350660. Its totient is φ = 3178429120.

The previous prime is 3257889871. The next prime is 3257889937. The reversal of 3257889889 is 9889887523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9889887523 = 26209 ⋅377347.

It can be written as a sum of positive squares in 2 ways, for example, as 58064400 + 3199825489 = 7620^2 + 56567^2 .

It is a cyclic number.

It is not a de Polignac number, because 3257889889 - 2²⁹ = 2721018977 is a prime.

It is a super-2 number, since 2×3257889889² = 21227693057696864642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3257889829) 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, 39730324 + ... + 39730405.

It is an arithmetic number, because the mean of its divisors is an integer number (834337665).

Almost surely, 2^3257889889 is an apocalyptic number.

It is an amenable number.

3257889889 is a deficient number, since it is larger than the sum of its proper divisors (79460771).

3257889889 is an equidigital number, since it uses as much as digits as its factorization.

3257889889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79460770.

The product of its digits is 69672960, while the sum is 67.

The square root of 3257889889 is about 57077.9282122258. The cubic root of 3257889889 is about 1482.4457201579.

The spelling of 3257889889 in words is "three billion, two hundred fifty-seven million, eight hundred eighty-nine thousand, eight hundred eighty-nine".