423561199 has 2 divisors, whose sum is σ = 423561200. Its totient is φ = 423561198.

The previous prime is 423561143. The next prime is 423561209. The reversal of 423561199 is 991165324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423561199 - 2¹⁵ = 423528431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423561139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211780599 + 211780600.

It is an arithmetic number, because the mean of its divisors is an integer number (211780600).

Almost surely, 2^423561199 is an apocalyptic number.

423561199 is a deficient number, since it is larger than the sum of its proper divisors (1).

423561199 is an equidigital number, since it uses as much as digits as its factorization.

423561199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 40.

The square root of 423561199 is about 20580.6024936103. The cubic root of 423561199 is about 750.9979007071.

The spelling of 423561199 in words is "four hundred twenty-three million, five hundred sixty-one thousand, one hundred ninety-nine".