3998803 has 4 divisors (see below), whose sum is σ = 4172688. Its totient is φ = 3824920.

The previous prime is 3998801. The next prime is 3998809. The reversal of 3998803 is 3088993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3998803 - 2¹ = 3998801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3998801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86908 + ... + 86953.

It is an arithmetic number, because the mean of its divisors is an integer number (1043172).

Almost surely, 2^3998803 is an apocalyptic number.

3998803 is a deficient number, since it is larger than the sum of its proper divisors (173885).

3998803 is a wasteful number, since it uses less digits than its factorization.

3998803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173884.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 3998803 is about 1999.7007276090. The cubic root of 3998803 is about 158.7242692916.

The spelling of 3998803 in words is "three million, nine hundred ninety-eight thousand, eight hundred three".