834749 has 4 divisors (see below), whose sum is σ = 837564. Its totient is φ = 831936.

The previous prime is 834721. The next prime is 834761. The reversal of 834749 is 947438.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947438 = 2 ⋅473719.

It can be written as a sum of positive squares in 2 ways, for example, as 319225 + 515524 = 565^2 + 718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-834749 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (834709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902 + ... + 1575.

It is an arithmetic number, because the mean of its divisors is an integer number (209391).

2⁸³⁴⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

834749 is a deficient number, since it is larger than the sum of its proper divisors (2815).

834749 is a wasteful number, since it uses less digits than its factorization.

834749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814.

The product of its digits is 24192, while the sum is 35.

The square root of 834749 is about 913.6459927127. The cubic root of 834749 is about 94.1568604750.

The spelling of 834749 in words is "eight hundred thirty-four thousand, seven hundred forty-nine".