4831779121 has 9 divisors (see below), whose sum is σ = 5233023531. Its totient is φ = 4459269672.

The previous prime is 4831779101. The next prime is 4831779137. The reversal of 4831779121 is 1219771384.

The square root of 4831779121 is 69511.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 714760225 + 4117018896 = 26735^2 + 64164^2 .

It is not a de Polignac number, because 4831779121 - 2⁵ = 4831779089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4831779101) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 900970 + ... + 906316.

It is an arithmetic number, because the mean of its divisors is an integer number (581447059).

Almost surely, 2^4831779121 is an apocalyptic number.

4831779121 is the 69511-st square number.

4831779121 is the 34756-th centered octagonal number.

It is an amenable number.

4831779121 is a deficient number, since it is larger than the sum of its proper divisors (401244410).

4831779121 is an frugal number, since it uses more digits than its factorization.

4831779121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10720 (or 5360 counting only the distinct ones).

The product of its digits is 84672, while the sum is 43.

The cubic root of 4831779121 is about 1690.5798601915.

The spelling of 4831779121 in words is "four billion, eight hundred thirty-one million, seven hundred seventy-nine thousand, one hundred twenty-one".