3998873 has 4 divisors (see below), whose sum is σ = 4209360. Its totient is φ = 3788388.

The previous prime is 3998837. The next prime is 3998881. The reversal of 3998873 is 3788993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3998873 - 2⁶ = 3998809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3998173) 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, 105215 + ... + 105252.

It is an arithmetic number, because the mean of its divisors is an integer number (1052340).

Almost surely, 2^3998873 is an apocalyptic number.

It is an amenable number.

3998873 is a deficient number, since it is larger than the sum of its proper divisors (210487).

3998873 is a wasteful number, since it uses less digits than its factorization.

3998873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210486.

The product of its digits is 326592, while the sum is 47.

The square root of 3998873 is about 1999.7182301514. The cubic root of 3998873 is about 158.7251954549.

The spelling of 3998873 in words is "three million, nine hundred ninety-eight thousand, eight hundred seventy-three".