485590993 has 4 divisors (see below), whose sum is σ = 502335540. Its totient is φ = 468846448.

The previous prime is 485590979. The next prime is 485591027. The reversal of 485590993 is 399095584.

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 389786049 + 95804944 = 19743^2 + 9788^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-485590993 is a prime.

It is a super-2 number, since 2×485590993² = 471597224965452098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 485590993.

It is not an unprimeable number, because it can be changed into a prime (485590933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8372230 + ... + 8372287.

It is an arithmetic number, because the mean of its divisors is an integer number (125583885).

Almost surely, 2^485590993 is an apocalyptic number.

It is an amenable number.

485590993 is a deficient number, since it is larger than the sum of its proper divisors (16744547).

485590993 is a wasteful number, since it uses less digits than its factorization.

485590993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16744546.

The product of its (nonzero) digits is 1749600, while the sum is 52.

The square root of 485590993 is about 22036.1292653678. The cubic root of 485590993 is about 786.0018004823.

The spelling of 485590993 in words is "four hundred eighty-five million, five hundred ninety thousand, nine hundred ninety-three".