3998197 has 8 divisors (see below), whose sum is σ = 4681152. Its totient is φ = 3343200.

The previous prime is 3998191. The next prime is 3998209. The reversal of 3998197 is 7918993.

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

It is not a de Polignac number, because 3998197 - 2⁷ = 3998069 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998191) 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, 6679 + ... + 7252.

It is an arithmetic number, because the mean of its divisors is an integer number (585144).

Almost surely, 2^3998197 is an apocalyptic number.

It is an amenable number.

3998197 is a deficient number, since it is larger than the sum of its proper divisors (682955).

3998197 is a wasteful number, since it uses less digits than its factorization.

3998197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13979.

The product of its digits is 122472, while the sum is 46.

The square root of 3998197 is about 1999.5491991947. The cubic root of 3998197 is about 158.7162509115.

The spelling of 3998197 in words is "three million, nine hundred ninety-eight thousand, one hundred ninety-seven".