3988888 has 8 divisors (see below), whose sum is σ = 7479180. Its totient is φ = 1994440.

The previous prime is 3988877. The next prime is 3988889. The reversal of 3988888 is 8888893.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×3988888² = 31822454953088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3988889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249298 + ... + 249313.

Almost surely, 2^3988888 is an apocalyptic number.

It is an amenable number.

3988888 is a deficient number, since it is larger than the sum of its proper divisors (3490292).

3988888 is a wasteful number, since it uses less digits than its factorization.

3988888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498617 (or 498613 counting only the distinct ones).

The product of its digits is 884736, while the sum is 52.

The square root of 3988888 is about 1997.2200679945. The cubic root of 3988888 is about 158.5929755331.

The spelling of 3988888 in words is "three million, nine hundred eighty-eight thousand, eight hundred eighty-eight".