39323945 has 4 divisors (see below), whose sum is σ = 47188740. Its totient is φ = 31459152.

The previous prime is 39323929. The next prime is 39323953. The reversal of 39323945 is 54932393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54932393 = 1319 ⋅41647.

It can be written as a sum of positive squares in 2 ways, for example, as 6822544 + 32501401 = 2612^2 + 5701^2 .

It is a cyclic number.

It is not a de Polignac number, because 39323945 - 2⁴ = 39323929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39323899 and 39323908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3932390 + ... + 3932399.

It is an arithmetic number, because the mean of its divisors is an integer number (11797185).

Almost surely, 2^39323945 is an apocalyptic number.

It is an amenable number.

39323945 is a deficient number, since it is larger than the sum of its proper divisors (7864795).

39323945 is an equidigital number, since it uses as much as digits as its factorization.

39323945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7864794.

The product of its digits is 87480, while the sum is 38.

The square root of 39323945 is about 6270.8807196438. The cubic root of 39323945 is about 340.0575018086.

The spelling of 39323945 in words is "thirty-nine million, three hundred twenty-three thousand, nine hundred forty-five".