4785090221 has 4 divisors (see below), whose sum is σ = 4785739200. Its totient is φ = 4784441244.

The previous prime is 4785090199. The next prime is 4785090239. The reversal of 4785090221 is 1220905874.

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 a de Polignac number, because none of the positive numbers 2^k-4785090221 is a prime.

It is a super-5 number, since 5×4785090221⁵ (a number of 50 digits) contains 55555 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 (4785090241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313301 + ... + 328218.

It is an arithmetic number, because the mean of its divisors is an integer number (1196434800).

Almost surely, 2^4785090221 is an apocalyptic number.

It is an amenable number.

4785090221 is a deficient number, since it is larger than the sum of its proper divisors (648979).

4785090221 is an equidigital number, since it uses as much as digits as its factorization.

4785090221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648978.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 4785090221 is about 69174.3465527503. The cubic root of 4785090221 is about 1685.1169364733.

The spelling of 4785090221 in words is "four billion, seven hundred eighty-five million, ninety thousand, two hundred twenty-one".