424315993 has 2 divisors, whose sum is σ = 424315994. Its totient is φ = 424315992.

The previous prime is 424315921. The next prime is 424316063. The reversal of 424315993 is 399513424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423207184 + 1108809 = 20572^2 + 1053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424315993 is a prime.

It is not a weakly prime, because it can be changed into another prime (424315093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212157996 + 212157997.

It is an arithmetic number, because the mean of its divisors is an integer number (212157997).

Almost surely, 2^424315993 is an apocalyptic number.

It is an amenable number.

424315993 is a deficient number, since it is larger than the sum of its proper divisors (1).

424315993 is an equidigital number, since it uses as much as digits as its factorization.

424315993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 40.

The square root of 424315993 is about 20598.9318412388. The cubic root of 424315993 is about 751.4437334321.

The spelling of 424315993 in words is "four hundred twenty-four million, three hundred fifteen thousand, nine hundred ninety-three".