426782813 has 4 divisors (see below), whose sum is σ = 434016480. Its totient is φ = 419549148.

The previous prime is 426782809. The next prime is 426782843. The reversal of 426782813 is 318287624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 426782813 - 2² = 426782809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426782843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3616745 + ... + 3616862.

It is an arithmetic number, because the mean of its divisors is an integer number (108504120).

Almost surely, 2^426782813 is an apocalyptic number.

It is an amenable number.

426782813 is a deficient number, since it is larger than the sum of its proper divisors (7233667).

426782813 is an equidigital number, since it uses as much as digits as its factorization.

426782813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7233666.

The product of its digits is 129024, while the sum is 41.

The square root of 426782813 is about 20658.7224435588. The cubic root of 426782813 is about 752.8971280849.

The spelling of 426782813 in words is "four hundred twenty-six million, seven hundred eighty-two thousand, eight hundred thirteen".