3997199 has 4 divisors (see below), whose sum is σ = 4034664. Its totient is φ = 3959736.

The previous prime is 3997181. The next prime is 3997211. The reversal of 3997199 is 9917993.

It is a happy number.

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 3997199 - 2¹² = 3993103 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997129) 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, 18572 + ... + 18785.

It is an arithmetic number, because the mean of its divisors is an integer number (1008666).

Almost surely, 2^3997199 is an apocalyptic number.

3997199 is a deficient number, since it is larger than the sum of its proper divisors (37465).

3997199 is a wasteful number, since it uses less digits than its factorization.

3997199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37464.

The product of its digits is 137781, while the sum is 47.

The square root of 3997199 is about 1999.2996273695. The cubic root of 3997199 is about 158.7030439585.

The spelling of 3997199 in words is "three million, nine hundred ninety-seven thousand, one hundred ninety-nine".