394720834 has 8 divisors (see below), whose sum is σ = 592227468. Its totient is φ = 197311680.

The previous prime is 394720829. The next prime is 394720891. The reversal of 394720834 is 438027493.

It can be written as a sum of positive squares in 2 ways, for example, as 393824025 + 896809 = 19845^2 + 947^2 .

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

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, 13227 + ... + 31054.

Almost surely, 2^394720834 is an apocalyptic number.

394720834 is a deficient number, since it is larger than the sum of its proper divisors (197506634).

394720834 is a wasteful number, since it uses less digits than its factorization.

394720834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48740.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 394720834 is about 19867.5824900766. The cubic root of 394720834 is about 733.5504985394.

The spelling of 394720834 in words is "three hundred ninety-four million, seven hundred twenty thousand, eight hundred thirty-four".