834740443321 has 4 divisors (see below), whose sum is σ = 834744966912. Its totient is φ = 834735919732.

The previous prime is 834740443253. The next prime is 834740443333. The reversal of 834740443321 is 123344047438.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123344047438 = 2 ⋅61672023719.

It is a cyclic number.

It is not a de Polignac number, because 834740443321 - 2³⁵ = 800380704953 is a prime.

It is a super-2 number, since 2×834740443321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (834740453321) 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, 1972681 + ... + 2358166.

It is an arithmetic number, because the mean of its divisors is an integer number (208686241728).

Almost surely, 2^834740443321 is an apocalyptic number.

It is an amenable number.

834740443321 is a deficient number, since it is larger than the sum of its proper divisors (4523591).

834740443321 is a wasteful number, since it uses less digits than its factorization.

834740443321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4523590.

The product of its (nonzero) digits is 774144, while the sum is 43.

The spelling of 834740443321 in words is "eight hundred thirty-four billion, seven hundred forty million, four hundred forty-three thousand, three hundred twenty-one".