3998111 has 16 divisors (see below), whose sum is σ = 4636800. Its totient is φ = 3414528.

The previous prime is 3998107. The next prime is 3998119. The reversal of 3998111 is 1118993.

It is not a de Polignac number, because 3998111 - 2² = 3998107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17345 + ... + 17573.

It is an arithmetic number, because the mean of its divisors is an integer number (289800).

Almost surely, 2^3998111 is an apocalyptic number.

3998111 is a deficient number, since it is larger than the sum of its proper divisors (638689).

3998111 is a wasteful number, since it uses less digits than its factorization.

3998111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338.

The product of its digits is 1944, while the sum is 32.

The square root of 3998111 is about 1999.5276942318. The cubic root of 3998111 is about 158.7151129240.

The spelling of 3998111 in words is "three million, nine hundred ninety-eight thousand, one hundred eleven".