424343391 has 4 divisors (see below), whose sum is σ = 565791192. Its totient is φ = 282895592.

The previous prime is 424343377. The next prime is 424343411. The reversal of 424343391 is 193343424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 424343391 - 2⁶ = 424343327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424343351) 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 in 3 ways as a sum of consecutive naturals, for example, 70723896 + ... + 70723901.

It is an arithmetic number, because the mean of its divisors is an integer number (141447798).

Almost surely, 2^424343391 is an apocalyptic number.

424343391 is a deficient number, since it is larger than the sum of its proper divisors (141447801).

424343391 is a wasteful number, since it uses less digits than its factorization.

424343391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141447800.

The product of its digits is 31104, while the sum is 33.

The square root of 424343391 is about 20599.5968649874. The cubic root of 424343391 is about 751.4599066086.

Adding to 424343391 its sum of digits (33), we get a palindrome (424343424).

The spelling of 424343391 in words is "four hundred twenty-four million, three hundred forty-three thousand, three hundred ninety-one".