3898444 has 24 divisors (see below), whose sum is σ = 7627536. Its totient is φ = 1728000.

The previous prime is 3898421. The next prime is 3898451. The reversal of 3898444 is 4448983.

It is a super-2 number, since 2×3898444² = 30395731242272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3898397 and 3898406.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 724 + ... + 2884.

It is an arithmetic number, because the mean of its divisors is an integer number (317814).

Almost surely, 2^3898444 is an apocalyptic number.

It is an amenable number.

3898444 is a deficient number, since it is larger than the sum of its proper divisors (3729092).

3898444 is a wasteful number, since it uses less digits than its factorization.

3898444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217 (or 2215 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 3898444 is about 1974.4477708970. The cubic root of 3898444 is about 157.3851552137.

The spelling of 3898444 in words is "three million, eight hundred ninety-eight thousand, four hundred forty-four".