39955841 has 6 divisors (see below), whose sum is σ = 42169842. Its totient is φ = 37852560.

The previous prime is 39955837. The next prime is 39955849. The reversal of 39955841 is 14855993.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 36966400 + 2989441 = 6080^2 + 1729^2 .

It is not a de Polignac number, because 39955841 - 2² = 39955837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39955792 and 39955801.

It is not an unprimeable number, because it can be changed into a prime (39955849) 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 5 ways as a sum of consecutive naturals, for example, 54980 + ... + 55701.

It is an arithmetic number, because the mean of its divisors is an integer number (7028307).

Almost surely, 2^39955841 is an apocalyptic number.

It is an amenable number.

39955841 is a deficient number, since it is larger than the sum of its proper divisors (2214001).

39955841 is a wasteful number, since it uses less digits than its factorization.

39955841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110719 (or 110700 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The square root of 39955841 is about 6321.0632808096. The cubic root of 39955841 is about 341.8692916149.

The spelling of 39955841 in words is "thirty-nine million, nine hundred fifty-five thousand, eight hundred forty-one".