3998736 has 60 divisors (see below), whose sum is σ = 12792832. Its totient is φ = 1142208.

The previous prime is 3998719. The next prime is 3998737. The reversal of 3998736 is 6378993.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 3998691 and 3998700.

It is not an unprimeable number, because it can be changed into a prime (3998737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 976 + ... + 2991.

Almost surely, 2^3998736 is an apocalyptic number.

3998736 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3998736 is an abundant number, since it is smaller than the sum of its proper divisors (8794096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3998736 is a wasteful number, since it uses less digits than its factorization.

3998736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988 (or 3979 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 3998736 is about 1999.6839750321. The cubic root of 3998736 is about 158.7233828109.

The spelling of 3998736 in words is "three million, nine hundred ninety-eight thousand, seven hundred thirty-six".