41990197 has 4 divisors (see below), whose sum is σ = 42003180. Its totient is φ = 41977216.

The previous prime is 41990189. The next prime is 41990219. The reversal of 41990197 is 79109914.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8916196 + 33074001 = 2986^2 + 5751^2 .

It is a cyclic number.

It is not a de Polignac number, because 41990197 - 2³ = 41990189 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41990147) 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, 2679 + ... + 9547.

It is an arithmetic number, because the mean of its divisors is an integer number (10500795).

Almost surely, 2^41990197 is an apocalyptic number.

It is an amenable number.

41990197 is a deficient number, since it is larger than the sum of its proper divisors (12983).

41990197 is an equidigital number, since it uses as much as digits as its factorization.

41990197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12982.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 41990197 is about 6479.9843364008. The cubic root of 41990197 is about 347.5756183453.

The spelling of 41990197 in words is "forty-one million, nine hundred ninety thousand, one hundred ninety-seven".