39120385 has 4 divisors (see below), whose sum is σ = 46944468. Its totient is φ = 31296304.

The previous prime is 39120371. The next prime is 39120421. The reversal of 39120385 is 58302193.

It is a happy number.

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 9884736 + 29235649 = 3144^2 + 5407^2 .

It is a cyclic number.

It is not a de Polignac number, because 39120385 - 2⁵ = 39120353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3912034 + ... + 3912043.

It is an arithmetic number, because the mean of its divisors is an integer number (11736117).

Almost surely, 2^39120385 is an apocalyptic number.

It is an amenable number.

39120385 is a deficient number, since it is larger than the sum of its proper divisors (7824083).

39120385 is an equidigital number, since it uses as much as digits as its factorization.

39120385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7824082.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 39120385 is about 6254.6290857252. The cubic root of 39120385 is about 339.4697183579.

The spelling of 39120385 in words is "thirty-nine million, one hundred twenty thousand, three hundred eighty-five".