41399161 has 4 divisors (see below), whose sum is σ = 41454324. Its totient is φ = 41344000.

The previous prime is 41399143. The next prime is 41399209. The reversal of 41399161 is 16199314.

It is a happy number.

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 10530025 + 30869136 = 3245^2 + 5556^2 .

It is a cyclic number.

It is not a de Polignac number, because 41399161 - 2⁵ = 41399129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41399101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26440 + ... + 27961.

It is an arithmetic number, because the mean of its divisors is an integer number (10363581).

Almost surely, 2^41399161 is an apocalyptic number.

It is an amenable number.

41399161 is a deficient number, since it is larger than the sum of its proper divisors (55163).

41399161 is an equidigital number, since it uses as much as digits as its factorization.

41399161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55162.

The product of its digits is 5832, while the sum is 34.

The square root of 41399161 is about 6434.2179789000. The cubic root of 41399161 is about 345.9371314823.

The spelling of 41399161 in words is "forty-one million, three hundred ninety-nine thousand, one hundred sixty-one".