426428393 has 8 divisors (see below), whose sum is σ = 431488512. Its totient is φ = 421382016.

The previous prime is 426428389. The next prime is 426428399. The reversal of 426428393 is 393824624.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 426428393 - 2² = 426428389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 426428393.

It is not an unprimeable number, because it can be changed into a prime (426428399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67496 + ... + 73542.

It is an arithmetic number, because the mean of its divisors is an integer number (53936064).

Almost surely, 2^426428393 is an apocalyptic number.

It is an amenable number.

426428393 is a deficient number, since it is larger than the sum of its proper divisors (5060119).

426428393 is an equidigital number, since it uses as much as digits as its factorization.

426428393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6871.

The product of its digits is 248832, while the sum is 41.

The square root of 426428393 is about 20650.1426871584. The cubic root of 426428393 is about 752.6886569438.

The spelling of 426428393 in words is "four hundred twenty-six million, four hundred twenty-eight thousand, three hundred ninety-three".