3998408 has 8 divisors (see below), whose sum is σ = 7497030. Its totient is φ = 1999200.

The previous prime is 3998399. The next prime is 3998413. The reversal of 3998408 is 8048993.

It can be written as a sum of positive squares in only one way, i.e., 2553604 + 1444804 = 1598^2 + 1202^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249893 + ... + 249908.

Almost surely, 2^3998408 is an apocalyptic number.

It is an amenable number.

3998408 is a deficient number, since it is larger than the sum of its proper divisors (3498622).

3998408 is a wasteful number, since it uses less digits than its factorization.

3998408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499807 (or 499803 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 3998408 is about 1999.6019603911. The cubic root of 3998408 is about 158.7190428817.

The spelling of 3998408 in words is "three million, nine hundred ninety-eight thousand, four hundred eight".