3998425 has 6 divisors (see below), whose sum is σ = 4958078. Its totient is φ = 3198720.

The previous prime is 3998419. The next prime is 3998459. The reversal of 3998425 is 5248993.

It is a happy number.

3998425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 700569 + 3297856 = 837^2 + 1816^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3998425 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79944 + ... + 79993.

Almost surely, 2^3998425 is an apocalyptic number.

It is an amenable number.

3998425 is a deficient number, since it is larger than the sum of its proper divisors (959653).

3998425 is a wasteful number, since it uses less digits than its factorization.

3998425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159947 (or 159942 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 3998425 is about 1999.6062112326. The cubic root of 3998425 is about 158.7192678229.

The spelling of 3998425 in words is "three million, nine hundred ninety-eight thousand, four hundred twenty-five".