39941641 has 4 divisors (see below), whose sum is σ = 40596484. Its totient is φ = 39286800.

The previous prime is 39941623. The next prime is 39941647. The reversal of 39941641 is 14614993.

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 5308416 + 34633225 = 2304^2 + 5885^2 .

It is a cyclic number.

It is not a de Polignac number, because 39941641 - 2⁷ = 39941513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39941641.

It is not an unprimeable number, because it can be changed into a prime (39941647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327330 + ... + 327451.

It is an arithmetic number, because the mean of its divisors is an integer number (10149121).

Almost surely, 2^39941641 is an apocalyptic number.

It is an amenable number.

39941641 is a deficient number, since it is larger than the sum of its proper divisors (654843).

39941641 is an equidigital number, since it uses as much as digits as its factorization.

39941641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654842.

The product of its digits is 23328, while the sum is 37.

The square root of 39941641 is about 6319.9399522464. The cubic root of 39941641 is about 341.8287875733.

The spelling of 39941641 in words is "thirty-nine million, nine hundred forty-one thousand, six hundred forty-one".