3479772861 has 6 divisors (see below), whose sum is σ = 5026338590. Its totient is φ = 2319848568.

The previous prime is 3479772853. The next prime is 3479772911. The reversal of 3479772861 is 1682779743.

It can be written as a sum of positive squares in only one way, i.e., 2205711225 + 1274061636 = 46965^2 + 35694^2 .

It is not a de Polignac number, because 3479772861 - 2³ = 3479772853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3479772798 and 3479772807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3479772761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193320706 + ... + 193320723.

Almost surely, 2^3479772861 is an apocalyptic number.

It is an amenable number.

3479772861 is a deficient number, since it is larger than the sum of its proper divisors (1546565729).

3479772861 is a wasteful number, since it uses less digits than its factorization.

3479772861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386641435 (or 386641432 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 3479772861 is about 58989.5996002685. The cubic root of 3479772861 is about 1515.3639997180.

The spelling of 3479772861 in words is "three billion, four hundred seventy-nine million, seven hundred seventy-two thousand, eight hundred sixty-one".