834390 has 48 divisors (see below), whose sum is σ = 2216448. Its totient is φ = 217728.

The previous prime is 834367. The next prime is 834433. The reversal of 834390 is 93438.

It is a congruent number.

It is an unprimeable number.

834390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6507 + ... + 6633.

It is an arithmetic number, because the mean of its divisors is an integer number (46176).

2⁸³⁴³⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 834390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1108224).

834390 is an abundant number, since it is smaller than the sum of its proper divisors (1382058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

834390 is a wasteful number, since it uses less digits than its factorization.

834390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 834390 is about 913.4495059936. The cubic root of 834390 is about 94.1433605448.

The spelling of 834390 in words is "eight hundred thirty-four thousand, three hundred ninety".