39999041 has 4 divisors (see below), whose sum is σ = 40062084. Its totient is φ = 39936000.

The previous prime is 39999023. The next prime is 39999049. The reversal of 39999041 is 14099993.

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 37761025 + 2238016 = 6145^2 + 1496^2 .

It is a cyclic number.

It is not a de Polignac number, because 39999041 - 2¹⁰ = 39998017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39998983 and 39999001.

It is not an unprimeable number, because it can be changed into a prime (39999049) 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, 30560 + ... + 31841.

It is an arithmetic number, because the mean of its divisors is an integer number (10015521).

Almost surely, 2^39999041 is an apocalyptic number.

It is an amenable number.

39999041 is a deficient number, since it is larger than the sum of its proper divisors (63043).

39999041 is an equidigital number, since it uses as much as digits as its factorization.

39999041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63042.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 39999041 is about 6324.4795042754. The cubic root of 39999041 is about 341.9924562019.

The spelling of 39999041 in words is "thirty-nine million, nine hundred ninety-nine thousand, forty-one".