3479172820 has 48 divisors (see below), whose sum is σ = 7492051728. Its totient is φ = 1356687360.

The previous prime is 3479172803. The next prime is 3479172869. The reversal of 3479172820 is 282719743.

It can be written as a sum of positive squares in 8 ways, for example, as 964350916 + 2514821904 = 31054^2 + 50148^2 .

It is a super-2 number, since 2×3479172820² = 24209287022853504800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125242 + ... + 150478.

It is an arithmetic number, because the mean of its divisors is an integer number (156084411).

Almost surely, 2^3479172820 is an apocalyptic number.

It is an amenable number.

3479172820 is an abundant number, since it is smaller than the sum of its proper divisors (4012878908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3479172820 is a wasteful number, since it uses less digits than its factorization.

3479172820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25420 (or 25418 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 3479172820 is about 58984.5133912284. The cubic root of 3479172820 is about 1515.2768931898.

The spelling of 3479172820 in words is "three billion, four hundred seventy-nine million, one hundred seventy-two thousand, eight hundred twenty".