39995941 has 2 divisors, whose sum is σ = 39995942. Its totient is φ = 39995940.

The previous prime is 39995929. The next prime is 39995947. The reversal of 39995941 is 14959993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26563716 + 13432225 = 5154^2 + 3665^2 .

It is a cyclic number.

It is not a de Polignac number, because 39995941 - 2¹¹ = 39993893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39995947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19997970 + 19997971.

It is an arithmetic number, because the mean of its divisors is an integer number (19997971).

Almost surely, 2^39995941 is an apocalyptic number.

It is an amenable number.

39995941 is a deficient number, since it is larger than the sum of its proper divisors (1).

39995941 is an equidigital number, since it uses as much as digits as its factorization.

39995941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393660, while the sum is 49.

The square root of 39995941 is about 6324.2344200701. The cubic root of 39995941 is about 341.9836209568.

The spelling of 39995941 in words is "thirty-nine million, nine hundred ninety-five thousand, nine hundred forty-one".