426789019 has 4 divisors (see below), whose sum is σ = 434841696. Its totient is φ = 418736344.

The previous prime is 426789017. The next prime is 426789031. The reversal of 426789019 is 910987624.

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 426789019 - 2¹ = 426789017 is a prime.

It is a super-2 number, since 2×426789019² = 364297733477964722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 426789019.

It is not an unprimeable number, because it can be changed into a prime (426789017) 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, 4026259 + ... + 4026364.

It is an arithmetic number, because the mean of its divisors is an integer number (108710424).

Almost surely, 2^426789019 is an apocalyptic number.

426789019 is a deficient number, since it is larger than the sum of its proper divisors (8052677).

426789019 is an equidigital number, since it uses as much as digits as its factorization.

426789019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052676.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 426789019 is about 20658.8726459117. The cubic root of 426789019 is about 752.9007774485.

The spelling of 426789019 in words is "four hundred twenty-six million, seven hundred eighty-nine thousand, nineteen".