3319939872 has 144 divisors (see below), whose sum is σ = 10019449440. Its totient is φ = 1080801792.

The previous prime is 3319939867. The next prime is 3319939879. The reversal of 3319939872 is 2789399133.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×3319939872² = 22044001507390752768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (3319939879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329404 + ... + 339332.

It is an arithmetic number, because the mean of its divisors is an integer number (69579510).

Almost surely, 2^3319939872 is an apocalyptic number.

3319939872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3319939872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5009724720).

3319939872 is an abundant number, since it is smaller than the sum of its proper divisors (6699509568).

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

3319939872 is an equidigital number, since it uses as much as digits as its factorization.

3319939872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9997 (or 9977 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 3319939872 is about 57618.9193928522. The cubic root of 3319939872 is about 1491.7981791619.

The spelling of 3319939872 in words is "three billion, three hundred nineteen million, nine hundred thirty-nine thousand, eight hundred seventy-two".