834209394 has 8 divisors (see below), whose sum is σ = 1668418800. Its totient is φ = 278069796.

The previous prime is 834209359. The next prime is 834209401. The reversal of 834209394 is 493902438.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

834209394 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69517444 + ... + 69517455.

It is an arithmetic number, because the mean of its divisors is an integer number (208552350).

Almost surely, 2^834209394 is an apocalyptic number.

834209394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

834209394 is a wasteful number, since it uses less digits than its factorization.

834209394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139034904.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 834209394 is about 28882.6832894730. The cubic root of 834209394 is about 941.3656752522.

The spelling of 834209394 in words is "eight hundred thirty-four million, two hundred nine thousand, three hundred ninety-four".