39306913 has 4 divisors (see below), whose sum is σ = 40369300. Its totient is φ = 38244528.

The previous prime is 39306893. The next prime is 39307013. The reversal of 39306913 is 31960393.

It is a happy number.

39306913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31960393 = 3119 ⋅10247.

It can be written as a sum of positive squares in 2 ways, for example, as 14386849 + 24920064 = 3793^2 + 4992^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39306913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39306313) 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 3 ways as a sum of consecutive naturals, for example, 531138 + ... + 531211.

It is an arithmetic number, because the mean of its divisors is an integer number (10092325).

Almost surely, 2^39306913 is an apocalyptic number.

It is an amenable number.

39306913 is a deficient number, since it is larger than the sum of its proper divisors (1062387).

39306913 is a wasteful number, since it uses less digits than its factorization.

39306913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062386.

The product of its (nonzero) digits is 13122, while the sum is 34.

The square root of 39306913 is about 6269.5225496046. The cubic root of 39306913 is about 340.0083994465.

The spelling of 39306913 in words is "thirty-nine million, three hundred six thousand, nine hundred thirteen".