485936639 has 4 divisors (see below), whose sum is σ = 486264480. Its totient is φ = 485608800.

The previous prime is 485936603. The next prime is 485936641. The reversal of 485936639 is 936639584.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-485936639 is a prime.

It is a super-2 number, since 2×485936639² = 472268834245232642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485936669) 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, 161687 + ... + 164664.

It is an arithmetic number, because the mean of its divisors is an integer number (121566120).

Almost surely, 2^485936639 is an apocalyptic number.

485936639 is a deficient number, since it is larger than the sum of its proper divisors (327841).

485936639 is a wasteful number, since it uses less digits than its factorization.

485936639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327840.

The product of its digits is 4199040, while the sum is 53.

The square root of 485936639 is about 22043.9705815445. The cubic root of 485936639 is about 786.1882495359.

The spelling of 485936639 in words is "four hundred eighty-five million, nine hundred thirty-six thousand, six hundred thirty-nine".