39444913 has 8 divisors (see below), whose sum is σ = 41833800. Its totient is φ = 37063680.

The previous prime is 39444907. The next prime is 39444943. The reversal of 39444913 is 31944493.

39444913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 106929 + 39337984 = 327^2 + 6272^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39444913 - 2⁹ = 39444401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39444943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11413 + ... + 14461.

It is an arithmetic number, because the mean of its divisors is an integer number (5229225).

Almost surely, 2^39444913 is an apocalyptic number.

It is an amenable number.

39444913 is a deficient number, since it is larger than the sum of its proper divisors (2388887).

39444913 is a wasteful number, since it uses less digits than its factorization.

39444913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827.

The product of its digits is 46656, while the sum is 37.

The square root of 39444913 is about 6280.5185295483. The cubic root of 39444913 is about 340.4058389095.

The spelling of 39444913 in words is "thirty-nine million, four hundred forty-four thousand, nine hundred thirteen".