3930880 has 72 divisors (see below), whose sum is σ = 9786672. Its totient is φ = 1511424.

The previous prime is 3930869. The next prime is 3930887. The reversal of 3930880 is 880393.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3930887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47319 + ... + 47401.

It is an arithmetic number, because the mean of its divisors is an integer number (135926).

Almost surely, 2^3930880 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 3930880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4893336).

3930880 is an abundant number, since it is smaller than the sum of its proper divisors (5855792).

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

3930880 is an equidigital number, since it uses as much as digits as its factorization.

3930880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 3930880 is about 1982.6446983764. The cubic root of 3930880 is about 157.8204444257.

The spelling of 3930880 in words is "three million, nine hundred thirty thousand, eight hundred eighty".