3840436889 has 4 divisors (see below), whose sum is σ = 3841346256. Its totient is φ = 3839527524.

The previous prime is 3840436837. The next prime is 3840436927. The reversal of 3840436889 is 9886340483.

3840436889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9886340483 = 491 ⋅20135113.

It is a cyclic number.

It is not a de Polignac number, because 3840436889 - 2²⁰ = 3839388313 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 3840436889.

It is not an unprimeable number, because it can be changed into a prime (3840435889) 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, 448319 + ... + 456804.

It is an arithmetic number, because the mean of its divisors is an integer number (960336564).

Almost surely, 2^3840436889 is an apocalyptic number.

It is an amenable number.

3840436889 is a deficient number, since it is larger than the sum of its proper divisors (909367).

3840436889 is an equidigital number, since it uses as much as digits as its factorization.

3840436889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909366.

The product of its (nonzero) digits is 3981312, while the sum is 53.

The square root of 3840436889 is about 61971.2585720187. The cubic root of 3840436889 is about 1566.0064418060.

The spelling of 3840436889 in words is "three billion, eight hundred forty million, four hundred thirty-six thousand, eight hundred eighty-nine".