3998481 has 16 divisors (see below), whose sum is σ = 5612544. Its totient is φ = 2527184.

The previous prime is 3998461. The next prime is 3998497. The reversal of 3998481 is 1848993.

It is a cyclic number.

It is not a de Polignac number, because 3998481 - 2⁷ = 3998353 is a prime.

It is a super-2 number, since 2×3998481² = 31975700614722, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3998461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11350 + ... + 11696.

It is an arithmetic number, because the mean of its divisors is an integer number (350784).

Almost surely, 2^3998481 is an apocalyptic number.

It is an amenable number.

3998481 is a deficient number, since it is larger than the sum of its proper divisors (1614063).

3998481 is a wasteful number, since it uses less digits than its factorization.

3998481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540.

The product of its digits is 62208, while the sum is 42.

The square root of 3998481 is about 1999.6202139406. The cubic root of 3998481 is about 158.7200088011.

The spelling of 3998481 in words is "three million, nine hundred ninety-eight thousand, four hundred eighty-one".