39745393 has 4 divisors (see below), whose sum is σ = 39842980. Its totient is φ = 39647808.

The previous prime is 39745367. The next prime is 39745411. The reversal of 39745393 is 39354793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39354793 = 41 ⋅959873.

It can be written as a sum of positive squares in 2 ways, for example, as 34492129 + 5253264 = 5873^2 + 2292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39745393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39745313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48180 + ... + 48997.

It is an arithmetic number, because the mean of its divisors is an integer number (9960745).

Almost surely, 2^39745393 is an apocalyptic number.

It is an amenable number.

39745393 is a deficient number, since it is larger than the sum of its proper divisors (97587).

39745393 is an equidigital number, since it uses as much as digits as its factorization.

39745393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97586.

The product of its digits is 306180, while the sum is 43.

The square root of 39745393 is about 6304.3947370069. The cubic root of 39745393 is about 341.2680245593.

The spelling of 39745393 in words is "thirty-nine million, seven hundred forty-five thousand, three hundred ninety-three".