423982 has 16 divisors (see below), whose sum is σ = 715680. Its totient is φ = 186912.

The previous prime is 423977. The next prime is 423989. The reversal of 423982 is 289324.

It is a self number, because there is not a number n which added to its sum of digits gives 423982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423989) by changing a digit.

423982 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 7 ways as a sum of consecutive naturals, for example, 244 + ... + 952.

It is an arithmetic number, because the mean of its divisors is an integer number (44730).

2⁴²³⁹⁸² is an apocalyptic number.

423982 is a deficient number, since it is larger than the sum of its proper divisors (291698).

423982 is a wasteful number, since it uses less digits than its factorization.

423982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747.

The product of its digits is 3456, while the sum is 28.

The square root of 423982 is about 651.1390020572. The cubic root of 423982 is about 75.1246519696.

The spelling of 423982 in words is "four hundred twenty-three thousand, nine hundred eighty-two".