426217894 has 4 divisors (see below), whose sum is σ = 639326844. Its totient is φ = 213108946.

The previous prime is 426217889. The next prime is 426217943. The reversal of 426217894 is 498712624.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 426217894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106554472 + ... + 106554475.

It is an arithmetic number, because the mean of its divisors is an integer number (159831711).

Almost surely, 2^426217894 is an apocalyptic number.

426217894 is a deficient number, since it is larger than the sum of its proper divisors (213108950).

426217894 is a wasteful number, since it uses less digits than its factorization.

426217894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213108949.

The product of its digits is 193536, while the sum is 43.

The square root of 426217894 is about 20645.0452651478. The cubic root of 426217894 is about 752.5647859807.

The spelling of 426217894 in words is "four hundred twenty-six million, two hundred seventeen thousand, eight hundred ninety-four".