812894629 has 4 divisors (see below), whose sum is σ = 821275084. Its totient is φ = 804514176.

The previous prime is 812894611. The next prime is 812894633. The reversal of 812894629 is 926498218.

812894629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 926498218 = 2 ⋅463249109.

It can be written as a sum of positive squares in 2 ways, for example, as 357285604 + 455609025 = 18902^2 + 21345^2 .

It is a cyclic number.

It is not a de Polignac number, because 812894629 - 2⁷ = 812894501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812894029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4190082 + ... + 4190275.

It is an arithmetic number, because the mean of its divisors is an integer number (205318771).

Almost surely, 2^812894629 is an apocalyptic number.

It is an amenable number.

812894629 is a deficient number, since it is larger than the sum of its proper divisors (8380455).

812894629 is an equidigital number, since it uses as much as digits as its factorization.

812894629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8380454.

The product of its digits is 497664, while the sum is 49.

The square root of 812894629 is about 28511.3070377350. The cubic root of 812894629 is about 933.2788372801.

The spelling of 812894629 in words is "eight hundred twelve million, eight hundred ninety-four thousand, six hundred twenty-nine".