426385 has 8 divisors (see below), whose sum is σ = 521640. Its totient is φ = 334464.

The previous prime is 426383. The next prime is 426389. The reversal of 426385 is 583624.

It can be written as a sum of positive squares in 4 ways, for example, as 199809 + 226576 = 447^2 + 476^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 426385 - 2¹ = 426383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540 + ... + 1069.

It is an arithmetic number, because the mean of its divisors is an integer number (65205).

2⁴²⁶³⁸⁵ is an apocalyptic number.

It is an amenable number.

426385 is a deficient number, since it is larger than the sum of its proper divisors (95255).

426385 is a wasteful number, since it uses less digits than its factorization.

426385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667.

The product of its digits is 5760, while the sum is 28.

The square root of 426385 is about 652.9816230186. The cubic root of 426385 is about 75.2663125086.

The spelling of 426385 in words is "four hundred twenty-six thousand, three hundred eighty-five".