834376989 has 4 divisors (see below), whose sum is σ = 1112502656. Its totient is φ = 556251324.

The previous prime is 834376987. The next prime is 834376993. The reversal of 834376989 is 989673438.

It is a happy number.

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 not a de Polignac number, because 834376989 - 2¹ = 834376987 is a prime.

It is a super-2 number, since 2×834376989² = 1392369919545412242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (834376987) 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, 139062829 + ... + 139062834.

It is an arithmetic number, because the mean of its divisors is an integer number (278125664).

Almost surely, 2^834376989 is an apocalyptic number.

It is an amenable number.

834376989 is a deficient number, since it is larger than the sum of its proper divisors (278125667).

834376989 is a wasteful number, since it uses less digits than its factorization.

834376989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278125666.

The product of its digits is 7838208, while the sum is 57.

The square root of 834376989 is about 28885.5844496870. The cubic root of 834376989 is about 941.4287120299.

The spelling of 834376989 in words is "eight hundred thirty-four million, three hundred seventy-six thousand, nine hundred eighty-nine".