485639997 has 4 divisors (see below), whose sum is σ = 647520000. Its totient is φ = 323759996.

The previous prime is 485639993. The next prime is 485640013. The reversal of 485639997 is 799936584.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 485639997 - 2² = 485639993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 485639997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485639993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80939997 + ... + 80940002.

It is an arithmetic number, because the mean of its divisors is an integer number (161880000).

Almost surely, 2^485639997 is an apocalyptic number.

It is an amenable number.

485639997 is a deficient number, since it is larger than the sum of its proper divisors (161880003).

485639997 is a wasteful number, since it uses less digits than its factorization.

485639997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161880002.

The product of its digits is 14696640, while the sum is 60.

The square root of 485639997 is about 22037.2411385818. The cubic root of 485639997 is about 786.0282396991.

The spelling of 485639997 in words is "four hundred eighty-five million, six hundred thirty-nine thousand, nine hundred ninety-seven".