423572249 has 2 divisors, whose sum is σ = 423572250. Its totient is φ = 423572248.

The previous prime is 423572213. The next prime is 423572299. The reversal of 423572249 is 942275324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344362249 + 79210000 = 18557^2 + 8900^2 .

It is a cyclic number.

It is not a de Polignac number, because 423572249 - 2²⁴ = 406795033 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (423572299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211786124 + 211786125.

It is an arithmetic number, because the mean of its divisors is an integer number (211786125).

Almost surely, 2^423572249 is an apocalyptic number.

It is an amenable number.

423572249 is a deficient number, since it is larger than the sum of its proper divisors (1).

423572249 is an equidigital number, since it uses as much as digits as its factorization.

423572249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

The square root of 423572249 is about 20580.8709485289. The cubic root of 423572249 is about 751.0044314081.

The spelling of 423572249 in words is "four hundred twenty-three million, five hundred seventy-two thousand, two hundred forty-nine".