39792161 has 4 divisors (see below), whose sum is σ = 39998532. Its totient is φ = 39585792.

The previous prime is 39792149. The next prime is 39792187. The reversal of 39792161 is 16129793.

It is a happy number.

39792161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16129793 = 1231 ⋅13103.

It can be written as a sum of positive squares in 2 ways, for example, as 19855936 + 19936225 = 4456^2 + 4465^2 .

It is a cyclic number.

It is not a de Polignac number, because 39792161 - 2⁶ = 39792097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39792101) 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 3 ways as a sum of consecutive naturals, for example, 102896 + ... + 103281.

It is an arithmetic number, because the mean of its divisors is an integer number (9999633).

Almost surely, 2^39792161 is an apocalyptic number.

It is an amenable number.

39792161 is a deficient number, since it is larger than the sum of its proper divisors (206371).

39792161 is a wasteful number, since it uses less digits than its factorization.

39792161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206370.

The product of its digits is 20412, while the sum is 38.

The square root of 39792161 is about 6308.1028051229. The cubic root of 39792161 is about 341.4018276301.

The spelling of 39792161 in words is "thirty-nine million, seven hundred ninety-two thousand, one hundred sixty-one".