457986 has 16 divisors (see below), whose sum is σ = 941184. Its totient is φ = 148464.

The previous prime is 457981. The next prime is 457987. The reversal of 457986 is 689754.

457986 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (457981) by changing a digit.

457986 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, 810 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (58824).

457986 is a Friedman number, since it can be written as 9^5*8-7^4*6, using all its digits and the basic arithmetic operations.

2⁴⁵⁷⁹⁸⁶ is an apocalyptic number.

457986 is an abundant number, since it is smaller than the sum of its proper divisors (483198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

457986 is a wasteful number, since it uses less digits than its factorization.

457986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105.

The product of its digits is 60480, while the sum is 39.

The square root of 457986 is about 676.7466291013. The cubic root of 457986 is about 77.0816023635.

The spelling of 457986 in words is "four hundred fifty-seven thousand, nine hundred eighty-six".