3489665872 has 80 divisors (see below), whose sum is σ = 8441424000. Its totient is φ = 1357701120.

The previous prime is 3489665843. The next prime is 3489665873. The reversal of 3489665872 is 2785669843.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3489665873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1143004 + ... + 1146052.

It is an arithmetic number, because the mean of its divisors is an integer number (105517800).

Almost surely, 2^3489665872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3489665872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4220712000).

3489665872 is an abundant number, since it is smaller than the sum of its proper divisors (4951758128).

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

3489665872 is a wasteful number, since it uses less digits than its factorization.

3489665872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004 (or 3998 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 58.

The square root of 3489665872 is about 59073.3939434666. The cubic root of 3489665872 is about 1516.7987033354.

The spelling of 3489665872 in words is "three billion, four hundred eighty-nine million, six hundred sixty-five thousand, eight hundred seventy-two".