834144889 has 4 divisors (see below), whose sum is σ = 834249060. Its totient is φ = 834040720.

The previous prime is 834144851. The next prime is 834144907. The reversal of 834144889 is 988441438.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 424689664 + 409455225 = 20608^2 + 20235^2 .

It is a cyclic number.

It is not a de Polignac number, because 834144889 - 2²⁵ = 800590457 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (834144589) 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, 38974 + ... + 56455.

It is an arithmetic number, because the mean of its divisors is an integer number (208562265).

Almost surely, 2^834144889 is an apocalyptic number.

It is an amenable number.

834144889 is a deficient number, since it is larger than the sum of its proper divisors (104171).

834144889 is an equidigital number, since it uses as much as digits as its factorization.

834144889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104170.

The product of its digits is 884736, while the sum is 49.

The square root of 834144889 is about 28881.5665953217. The cubic root of 834144889 is about 941.3414110173.

The spelling of 834144889 in words is "eight hundred thirty-four million, one hundred forty-four thousand, eight hundred eighty-nine".