812390834 has 8 divisors (see below), whose sum is σ = 1224710400. Its totient is φ = 404154036.

The previous prime is 812390827. The next prime is 812390861. The reversal of 812390834 is 438093218.

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

It is an unprimeable number.

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, 1020194 + ... + 1020989.

It is an arithmetic number, because the mean of its divisors is an integer number (153088800).

Almost surely, 2^812390834 is an apocalyptic number.

812390834 is a deficient number, since it is larger than the sum of its proper divisors (412319566).

812390834 is a wasteful number, since it uses less digits than its factorization.

812390834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041384.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 812390834 is about 28502.4706648389. The cubic root of 812390834 is about 933.0859962235.

The spelling of 812390834 in words is "eight hundred twelve million, three hundred ninety thousand, eight hundred thirty-four".