426986 has 12 divisors (see below), whose sum is σ = 745218. Its totient is φ = 182952.

The previous prime is 426973. The next prime is 426997. The reversal of 426986 is 689624.

It can be written as a sum of positive squares in only one way, i.e., 219961 + 207025 = 469^2 + 455^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

426986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2081 + ... + 2276.

2⁴²⁶⁹⁸⁶ is an apocalyptic number.

426986 is a deficient number, since it is larger than the sum of its proper divisors (318232).

426986 is a wasteful number, since it uses less digits than its factorization.

426986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373 (or 4366 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 426986 is about 653.4416576864. The cubic root of 426986 is about 75.3016591376.

The spelling of 426986 in words is "four hundred twenty-six thousand, nine hundred eighty-six".