3998243 has 8 divisors (see below), whose sum is σ = 4130112. Its totient is φ = 3868416.

The previous prime is 3998233. The next prime is 3998249. The reversal of 3998243 is 3428993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3998243 - 2¹² = 3994147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3998197 and 3998206.

It is not an unprimeable number, because it can be changed into a prime (3998249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4121 + ... + 4997.

It is an arithmetic number, because the mean of its divisors is an integer number (516264).

Almost surely, 2^3998243 is an apocalyptic number.

3998243 is a deficient number, since it is larger than the sum of its proper divisors (131869).

3998243 is an equidigital number, since it uses as much as digits as its factorization.

3998243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021.

The product of its digits is 46656, while the sum is 38.

The square root of 3998243 is about 1999.5607017543. The cubic root of 3998243 is about 158.7168595959.

The spelling of 3998243 in words is "three million, nine hundred ninety-eight thousand, two hundred forty-three".