39208993 has 4 divisors (see below), whose sum is σ = 39302548. Its totient is φ = 39115440.

The previous prime is 39208979. The next prime is 39208999. The reversal of 39208993 is 39980293.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39980293 = 6317 ⋅6329.

It can be written as a sum of positive squares in 2 ways, for example, as 2521744 + 36687249 = 1588^2 + 6057^2 .

It is a cyclic number.

It is not a de Polignac number, because 39208993 - 2¹³ = 39200801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39208999) 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, 46146 + ... + 46987.

It is an arithmetic number, because the mean of its divisors is an integer number (9825637).

Almost surely, 2^39208993 is an apocalyptic number.

It is an amenable number.

39208993 is a deficient number, since it is larger than the sum of its proper divisors (93555).

39208993 is an equidigital number, since it uses as much as digits as its factorization.

39208993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93554.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 39208993 is about 6261.7084729329. The cubic root of 39208993 is about 339.7258256794.

The spelling of 39208993 in words is "thirty-nine million, two hundred eight thousand, nine hundred ninety-three".