39253945 has 4 divisors (see below), whose sum is σ = 47104740. Its totient is φ = 31403152.

The previous prime is 39253931. The next prime is 39253957. The reversal of 39253945 is 54935293.

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 12752041 + 26501904 = 3571^2 + 5148^2 .

It is a cyclic number.

It is not a de Polignac number, because 39253945 - 2¹⁵ = 39221177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39253898 and 39253907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3925390 + ... + 3925399.

It is an arithmetic number, because the mean of its divisors is an integer number (11776185).

Almost surely, 2^39253945 is an apocalyptic number.

It is an amenable number.

39253945 is a deficient number, since it is larger than the sum of its proper divisors (7850795).

39253945 is an equidigital number, since it uses as much as digits as its factorization.

39253945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7850794.

The product of its digits is 145800, while the sum is 40.

The square root of 39253945 is about 6265.2968804359. The cubic root of 39253945 is about 339.8556047752.

The spelling of 39253945 in words is "thirty-nine million, two hundred fifty-three thousand, nine hundred forty-five".