4764797221 has 4 divisors (see below), whose sum is σ = 4772231244. Its totient is φ = 4757363200.

The previous prime is 4764797173. The next prime is 4764797249. The reversal of 4764797221 is 1227974674.

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 4055906596 + 708890625 = 63686^2 + 26625^2 .

It is a cyclic number.

It is not a de Polignac number, because 4764797221 - 2⁹ = 4764796709 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 (4764797251) 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, 3716050 + ... + 3717331.

It is an arithmetic number, because the mean of its divisors is an integer number (1193057811).

Almost surely, 2^4764797221 is an apocalyptic number.

It is an amenable number.

4764797221 is a deficient number, since it is larger than the sum of its proper divisors (7434023).

4764797221 is an equidigital number, since it uses as much as digits as its factorization.

4764797221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7434022.

The product of its digits is 1185408, while the sum is 49.

The square root of 4764797221 is about 69027.5106099010. The cubic root of 4764797221 is about 1682.7314340670.

The spelling of 4764797221 in words is "four billion, seven hundred sixty-four million, seven hundred ninety-seven thousand, two hundred twenty-one".