4727477721 has 4 divisors (see below), whose sum is σ = 6303303632. Its totient is φ = 3151651812.

The previous prime is 4727477701. The next prime is 4727477731. The reversal of 4727477721 is 1277747274.

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 not a de Polignac number, because 4727477721 - 2⁷ = 4727477593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4727477701) 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, 787912951 + ... + 787912956.

It is an arithmetic number, because the mean of its divisors is an integer number (1575825908).

Almost surely, 2^4727477721 is an apocalyptic number.

It is an amenable number.

4727477721 is a deficient number, since it is larger than the sum of its proper divisors (1575825911).

4727477721 is a wasteful number, since it uses less digits than its factorization.

4727477721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575825910.

The product of its digits is 1075648, while the sum is 48.

The square root of 4727477721 is about 68756.6558305449. The cubic root of 4727477721 is about 1678.3266739399.

The spelling of 4727477721 in words is "four billion, seven hundred twenty-seven million, four hundred seventy-seven thousand, seven hundred twenty-one".