426639265 has 16 divisors (see below), whose sum is σ = 552858768. Its totient is φ = 314194176.

The previous prime is 426639217. The next prime is 426639277. The reversal of 426639265 is 562936624.

It can be written as a sum of positive squares in 8 ways, for example, as 119268241 + 307371024 = 10921^2 + 17532^2 .

It is a cyclic number.

It is not a de Polignac number, because 426639265 - 2¹¹ = 426637217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 15447 + ... + 33043.

It is an arithmetic number, because the mean of its divisors is an integer number (34553673).

Almost surely, 2^426639265 is an apocalyptic number.

It is an amenable number.

426639265 is a deficient number, since it is larger than the sum of its proper divisors (126219503).

426639265 is a wasteful number, since it uses less digits than its factorization.

426639265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17988.

The product of its digits is 466560, while the sum is 43.

The square root of 426639265 is about 20655.2478803814. The cubic root of 426639265 is about 752.8127065376.

The spelling of 426639265 in words is "four hundred twenty-six million, six hundred thirty-nine thousand, two hundred sixty-five".