834440 has 32 divisors (see below), whose sum is σ = 1961280. Its totient is φ = 318912.

The previous prime is 834439. The next prime is 834469. The reversal of 834440 is 44438.

834440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×834440² = 1392580227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 834440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467 + ... + 1373.

It is an arithmetic number, because the mean of its divisors is an integer number (61290).

2⁸³⁴⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 834440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980640).

834440 is an abundant number, since it is smaller than the sum of its proper divisors (1126840).

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

834440 is a wasteful number, since it uses less digits than its factorization.

834440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 937 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 834440 is about 913.4768743652. The cubic root of 834440 is about 94.1452409900.

Adding to 834440 its reverse (44438), we get a palindrome (878878).

The spelling of 834440 in words is "eight hundred thirty-four thousand, four hundred forty".