426646438 has 8 divisors (see below), whose sum is σ = 640057320. Its totient is φ = 213294000.

The previous prime is 426646427. The next prime is 426646439. The reversal of 426646438 is 834646624.

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

It is a junction number, because it is equal to n+sod(n) for n = 426646394 and 426646403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426646439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21018 + ... + 35986.

It is an arithmetic number, because the mean of its divisors is an integer number (80007165).

Almost surely, 2^426646438 is an apocalyptic number.

426646438 is a deficient number, since it is larger than the sum of its proper divisors (213410882).

426646438 is a wasteful number, since it uses less digits than its factorization.

426646438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29222.

The product of its digits is 663552, while the sum is 43.

The square root of 426646438 is about 20655.4215159120. The cubic root of 426646438 is about 752.8169254767.

The spelling of 426646438 in words is "four hundred twenty-six million, six hundred forty-six thousand, four hundred thirty-eight".