3449008720 has 20 divisors (see below), whose sum is σ = 8018945460. Its totient is φ = 1379603456.

The previous prime is 3449008709. The next prime is 3449008721. The reversal of 3449008720 is 278009443.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 721244736 + 2727763984 = 26856^2 + 52228^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×3449008720² = 23791322301272076800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3449008720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3449008721) 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, 21556225 + ... + 21556384.

It is an arithmetic number, because the mean of its divisors is an integer number (400947273).

Almost surely, 2^3449008720 is an apocalyptic number.

It is an amenable number.

3449008720 is an abundant number, since it is smaller than the sum of its proper divisors (4569936740).

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

3449008720 is a wasteful number, since it uses less digits than its factorization.

3449008720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43112622 (or 43112616 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 3449008720 is about 58728.2616803869. The cubic root of 3449008720 is about 1510.8850738572.

The spelling of 3449008720 in words is "three billion, four hundred forty-nine million, eight thousand, seven hundred twenty".