481993 has 4 divisors (see below), whose sum is σ = 487060. Its totient is φ = 476928.

The previous prime is 481963. The next prime is 481997. The reversal of 481993 is 399184.

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

It can be written as a sum of positive squares in 2 ways, for example, as 153664 + 328329 = 392^2 + 573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2388 + ... + 2581.

It is an arithmetic number, because the mean of its divisors is an integer number (121765).

2⁴⁸¹⁹⁹³ is an apocalyptic number.

It is an amenable number.

481993 is a deficient number, since it is larger than the sum of its proper divisors (5067).

481993 is an equidigital number, since it uses as much as digits as its factorization.

481993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5066.

The product of its digits is 7776, while the sum is 34.

The square root of 481993 is about 694.2571569671. The cubic root of 481993 is about 78.4055688985.

The spelling of 481993 in words is "four hundred eighty-one thousand, nine hundred ninety-three".