3888887772 has 48 divisors (see below), whose sum is σ = 11313130752. Its totient is φ = 1010100480.

The previous prime is 3888887749. The next prime is 3888887789. The reversal of 3888887772 is 2777888883.

It is a super-2 number, since 2×3888887772² = 30246896206422247968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 2103453 + ... + 2105300.

It is an arithmetic number, because the mean of its divisors is an integer number (235690224).

Almost surely, 2^3888887772 is an apocalyptic number.

It is an amenable number.

3888887772 is an abundant number, since it is smaller than the sum of its proper divisors (7424242980).

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

3888887772 is a wasteful number, since it uses less digits than its factorization.

3888887772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208778 (or 4208776 counting only the distinct ones).

The product of its digits is 67436544, while the sum is 66.

The square root of 3888887772 is about 62360.9474911984. The cubic root of 3888887772 is about 1572.5645095586.

The spelling of 3888887772 in words is "three billion, eight hundred eighty-eight million, eight hundred eighty-seven thousand, seven hundred seventy-two".