422704829 has 4 divisors (see below), whose sum is σ = 423959484. Its totient is φ = 421450176.

The previous prime is 422704823. The next prime is 422704831. The reversal of 422704829 is 928407224.

422704829 = 72² + 73² + ... + 1082².

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

It can be written as a sum of positive squares in 2 ways, for example, as 198753604 + 223951225 = 14098^2 + 14965^2 .

It is a cyclic number.

It is not a de Polignac number, because 422704829 - 2⁸ = 422704573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 422704792 and 422704801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422704823) 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, 626822 + ... + 627495.

It is an arithmetic number, because the mean of its divisors is an integer number (105989871).

Almost surely, 2^422704829 is an apocalyptic number.

It is an amenable number.

422704829 is a deficient number, since it is larger than the sum of its proper divisors (1254655).

422704829 is a wasteful number, since it uses less digits than its factorization.

422704829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254654.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 422704829 is about 20559.7866963643. The cubic root of 422704829 is about 750.4914284456.

The spelling of 422704829 in words is "four hundred twenty-two million, seven hundred four thousand, eight hundred twenty-nine".