4139197 has 4 divisors (see below), whose sum is σ = 4145020. Its totient is φ = 4133376.

The previous prime is 4139189. The next prime is 4139203. The reversal of 4139197 is 7919314.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1907161 + 2232036 = 1381^2 + 1494^2 .

It is a cyclic number.

It is not a de Polignac number, because 4139197 - 2³ = 4139189 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 (4139147) 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, 1668 + ... + 3325.

It is an arithmetic number, because the mean of its divisors is an integer number (1036255).

Almost surely, 2^4139197 is an apocalyptic number.

It is an amenable number.

4139197 is a deficient number, since it is larger than the sum of its proper divisors (5823).

4139197 is an equidigital number, since it uses as much as digits as its factorization.

4139197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5822.

The product of its digits is 6804, while the sum is 34.

The square root of 4139197 is about 2034.5016588836. The cubic root of 4139197 is about 160.5604951770.

The spelling of 4139197 in words is "four million, one hundred thirty-nine thousand, one hundred ninety-seven".