424233391 has 2 divisors, whose sum is σ = 424233392. Its totient is φ = 424233390.

The previous prime is 424233389. The next prime is 424233409. The reversal of 424233391 is 193332424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424233391 - 2¹ = 424233389 is a prime.

Together with 424233389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424233331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212116695 + 212116696.

It is an arithmetic number, because the mean of its divisors is an integer number (212116696).

Almost surely, 2^424233391 is an apocalyptic number.

424233391 is a deficient number, since it is larger than the sum of its proper divisors (1).

424233391 is an equidigital number, since it uses as much as digits as its factorization.

424233391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 31.

The square root of 424233391 is about 20596.9267367731. The cubic root of 424233391 is about 751.3949688443.

It can be divided in two parts, 4242333 and 91, that added together give a palindrome (4242424).

The spelling of 424233391 in words is "four hundred twenty-four million, two hundred thirty-three thousand, three hundred ninety-one".