812434339 has 4 divisors (see below), whose sum is σ = 829720224. Its totient is φ = 795148456.

The previous prime is 812434331. The next prime is 812434351. The reversal of 812434339 is 933434218.

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

It is a cyclic number.

It is not a de Polignac number, because 812434339 - 2³ = 812434331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 812434298 and 812434307.

It is not an unprimeable number, because it can be changed into a prime (812434331) 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, 8642872 + ... + 8642965.

It is an arithmetic number, because the mean of its divisors is an integer number (207430056).

Almost surely, 2^812434339 is an apocalyptic number.

812434339 is a deficient number, since it is larger than the sum of its proper divisors (17285885).

812434339 is a wasteful number, since it uses less digits than its factorization.

812434339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17285884.

The product of its digits is 62208, while the sum is 37.

The square root of 812434339 is about 28503.2338340757. The cubic root of 812434339 is about 933.1026520743.

The spelling of 812434339 in words is "eight hundred twelve million, four hundred thirty-four thousand, three hundred thirty-nine".