423636349 has 4 divisors (see below), whose sum is σ = 423827964. Its totient is φ = 423444736.

The previous prime is 423636337. The next prime is 423636371. The reversal of 423636349 is 943636324.

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 130370724 + 293265625 = 11418^2 + 17125^2 .

It is a cyclic number.

It is not a de Polignac number, because 423636349 - 2¹³ = 423628157 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 (423636449) 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, 92452 + ... + 96925.

It is an arithmetic number, because the mean of its divisors is an integer number (105956991).

Almost surely, 2^423636349 is an apocalyptic number.

It is an amenable number.

423636349 is a deficient number, since it is larger than the sum of its proper divisors (191615).

423636349 is a wasteful number, since it uses less digits than its factorization.

423636349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191614.

The product of its digits is 279936, while the sum is 40.

The square root of 423636349 is about 20582.4281609338. The cubic root of 423636349 is about 751.0423131437.

The spelling of 423636349 in words is "four hundred twenty-three million, six hundred thirty-six thousand, three hundred forty-nine".