3898445 has 6 divisors (see below), whose sum is σ = 4683438. Its totient is φ = 3115224.

The previous prime is 3898421. The next prime is 3898451. The reversal of 3898445 is 5448983.

It can be written as a sum of positive squares in only one way, i.e., 3118756 + 779689 = 1766^2 + 883^2 .

It is not a de Polignac number, because 3898445 - 2¹² = 3894349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3974 + ... + 4856.

It is an arithmetic number, because the mean of its divisors is an integer number (780573).

Almost surely, 2^3898445 is an apocalyptic number.

It is an amenable number.

3898445 is a deficient number, since it is larger than the sum of its proper divisors (784993).

3898445 is an frugal number, since it uses more digits than its factorization.

3898445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771 (or 888 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 3898445 is about 1974.4480241323. The cubic root of 3898445 is about 157.3851686708.

The spelling of 3898445 in words is "three million, eight hundred ninety-eight thousand, four hundred forty-five".