810294394 has 32 divisors (see below), whose sum is σ = 1547521920. Its totient is φ = 309500352.

The previous prime is 810294313. The next prime is 810294403. The reversal of 810294394 is 493492018.

810294394 = 5366² + 5367² + ... + 5393².

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 15 ways as a sum of consecutive naturals, for example, 71484 + ... + 82039.

It is an arithmetic number, because the mean of its divisors is an integer number (48360060).

Almost surely, 2^810294394 is an apocalyptic number.

810294394 is a deficient number, since it is larger than the sum of its proper divisors (737227526).

810294394 is a wasteful number, since it uses less digits than its factorization.

810294394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153574.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 810294394 is about 28465.6704470490. The cubic root of 810294394 is about 932.2826702808.

The spelling of 810294394 in words is "eight hundred ten million, two hundred ninety-four thousand, three hundred ninety-four".