3998888 has 16 divisors (see below), whose sum is σ = 7526580. Its totient is φ = 1991808.

The previous prime is 3998881. The next prime is 3998899. The reversal of 3998888 is 8888993.

It can be written as a sum of positive squares in 2 ways, for example, as 3034564 + 964324 = 1742^2 + 982^2 .

It is a super-2 number, since 2×3998888² = 31982210473088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3998881) 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, 1706 + ... + 3302.

Almost surely, 2^3998888 is an apocalyptic number.

It is an amenable number.

3998888 is a deficient number, since it is larger than the sum of its proper divisors (3527692).

3998888 is a wasteful number, since it uses less digits than its factorization.

3998888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916 (or 1912 counting only the distinct ones).

The product of its digits is 995328, while the sum is 53.

The square root of 3998888 is about 1999.7219806763. The cubic root of 3998888 is about 158.7253939171.

The spelling of 3998888 in words is "three million, nine hundred ninety-eight thousand, eight hundred eighty-eight".