423188849 has 4 divisors (see below), whose sum is σ = 423809136. Its totient is φ = 422568564.

The previous prime is 423188827. The next prime is 423188879. The reversal of 423188849 is 948881324.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423188849 - 2¹⁶ = 423123313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423188809) 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, 309119 + ... + 310484.

It is an arithmetic number, because the mean of its divisors is an integer number (105952284).

Almost surely, 2^423188849 is an apocalyptic number.

It is an amenable number.

423188849 is a deficient number, since it is larger than the sum of its proper divisors (620287).

423188849 is an equidigital number, since it uses as much as digits as its factorization.

423188849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620286.

The product of its digits is 442368, while the sum is 47.

The square root of 423188849 is about 20571.5543651908. The cubic root of 423188849 is about 750.7777703374. Note that the first 5 decimals are identical.

The spelling of 423188849 in words is "four hundred twenty-three million, one hundred eighty-eight thousand, eight hundred forty-nine".