424424391 has 8 divisors (see below), whose sum is σ = 567417840. Its totient is φ = 282190272.

The previous prime is 424424389. The next prime is 424424443. The reversal of 424424391 is 193424424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 424424391 - 2¹ = 424424389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424424311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188526 + ... + 190763.

It is an arithmetic number, because the mean of its divisors is an integer number (70927230).

Almost surely, 2^424424391 is an apocalyptic number.

424424391 is a deficient number, since it is larger than the sum of its proper divisors (142993449).

424424391 is a wasteful number, since it uses less digits than its factorization.

424424391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379665.

The product of its digits is 27648, while the sum is 33.

The square root of 424424391 is about 20601.5628290671. The cubic root of 424424391 is about 751.5077172428.

Adding to 424424391 its sum of digits (33), we get a palindrome (424424424).

The spelling of 424424391 in words is "four hundred twenty-four million, four hundred twenty-four thousand, three hundred ninety-one".