426639886 has 8 divisors (see below), whose sum is σ = 648726624. Its totient is φ = 210397680.

The previous prime is 426639847. The next prime is 426639893. The reversal of 426639886 is 688936624.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460950 + ... + 1461241.

It is an arithmetic number, because the mean of its divisors is an integer number (81090828).

Almost surely, 2^426639886 is an apocalyptic number.

426639886 is a deficient number, since it is larger than the sum of its proper divisors (222086738).

426639886 is a wasteful number, since it uses less digits than its factorization.

426639886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922266.

The product of its digits is 2985984, while the sum is 52.

The square root of 426639886 is about 20655.2629128753. The cubic root of 426639886 is about 752.8130717926.

The spelling of 426639886 in words is "four hundred twenty-six million, six hundred thirty-nine thousand, eight hundred eighty-six".