426226639 has 16 divisors (see below), whose sum is σ = 470638080. Its totient is φ = 384199200.

The previous prime is 426226627. The next prime is 426226651. The reversal of 426226639 is 936622624.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (426226627) and next prime (426226651).

It is a cyclic number.

It is not a de Polignac number, because 426226639 - 2⁷ = 426226511 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 (426223639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83614 + ... + 88564.

It is an arithmetic number, because the mean of its divisors is an integer number (29414880).

Almost surely, 2^426226639 is an apocalyptic number.

426226639 is a deficient number, since it is larger than the sum of its proper divisors (44411441).

426226639 is a wasteful number, since it uses less digits than its factorization.

426226639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5190.

The product of its digits is 186624, while the sum is 40.

The square root of 426226639 is about 20645.2570582204. The cubic root of 426226639 is about 752.5699329053.

The spelling of 426226639 in words is "four hundred twenty-six million, two hundred twenty-six thousand, six hundred thirty-nine".