840894226 has 4 divisors (see below), whose sum is σ = 1261341342. Its totient is φ = 420447112.

The previous prime is 840894217. The next prime is 840894247. The reversal of 840894226 is 622498048.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 608362225 + 232532001 = 24665^2 + 15249^2 .

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 as a sum of consecutive naturals, namely, 210223555 + ... + 210223558.

Almost surely, 2^840894226 is an apocalyptic number.

840894226 is a deficient number, since it is larger than the sum of its proper divisors (420447116).

840894226 is a wasteful number, since it uses less digits than its factorization.

840894226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420447115.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 840894226 is about 28998.1762529991. The cubic root of 840894226 is about 943.8734935629.

The spelling of 840894226 in words is "eight hundred forty million, eight hundred ninety-four thousand, two hundred twenty-six".