39091793 has 8 divisors (see below), whose sum is σ = 42893928. Its totient is φ = 35403264.

The previous prime is 39091783. The next prime is 39091799. The reversal of 39091793 is 39719093.

39091793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4787344 + 34304449 = 2188^2 + 5857^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39091793 - 2⁶ = 39091729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39091793.

It is not an unprimeable number, because it can be changed into a prime (39091799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27680 + ... + 29057.

It is an arithmetic number, because the mean of its divisors is an integer number (5361741).

Almost surely, 2^39091793 is an apocalyptic number.

It is an amenable number.

39091793 is a deficient number, since it is larger than the sum of its proper divisors (3802135).

39091793 is a wasteful number, since it uses less digits than its factorization.

39091793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56803.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 39091793 is about 6252.3430008278. The cubic root of 39091793 is about 339.3869952133.

The spelling of 39091793 in words is "thirty-nine million, ninety-one thousand, seven hundred ninety-three".