812494 has 4 divisors (see below), whose sum is σ = 1218744. Its totient is φ = 406246.

The previous prime is 812491. The next prime is 812501. The reversal of 812494 is 494218.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203122 + ... + 203125.

It is an arithmetic number, because the mean of its divisors is an integer number (304686).

2⁸¹²⁴⁹⁴ is an apocalyptic number.

812494 is a deficient number, since it is larger than the sum of its proper divisors (406250).

812494 is a wasteful number, since it uses less digits than its factorization.

812494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406249.

The product of its digits is 2304, while the sum is 28.

The square root of 812494 is about 901.3844906587. The cubic root of 812494 is about 93.3125492269.

The spelling of 812494 in words is "eight hundred twelve thousand, four hundred ninety-four".