424262391 has 16 divisors (see below), whose sum is σ = 646795008. Its totient is φ = 242323200.

The previous prime is 424262389. The next prime is 424262407. The reversal of 424262391 is 193262424.

It is not a de Polignac number, because 424262391 - 2¹ = 424262389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424262351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67576 + ... + 73586.

It is an arithmetic number, because the mean of its divisors is an integer number (40424688).

Almost surely, 2^424262391 is an apocalyptic number.

424262391 is a deficient number, since it is larger than the sum of its proper divisors (222532617).

424262391 is a wasteful number, since it uses less digits than its factorization.

424262391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9382.

The product of its digits is 20736, while the sum is 33.

The square root of 424262391 is about 20597.6307132641. The cubic root of 424262391 is about 751.4120898898.

Adding to 424262391 its sum of digits (33), we get a palindrome (424262424).

The spelling of 424262391 in words is "four hundred twenty-four million, two hundred sixty-two thousand, three hundred ninety-one".