39790129 has 4 divisors (see below), whose sum is σ = 39824676. Its totient is φ = 39755584.

The previous prime is 39790087. The next prime is 39790139. The reversal of 39790129 is 92109793.

39790129 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: 92109793 = 233 ⋅395321.

It can be written as a sum of positive squares in 2 ways, for example, as 11189025 + 28601104 = 3345^2 + 5348^2 .

It is a cyclic number.

It is not a de Polignac number, because 39790129 - 2¹⁷ = 39659057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39790091 and 39790100.

It is not an unprimeable number, because it can be changed into a prime (39790139) 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, 15484 + ... + 17869.

It is an arithmetic number, because the mean of its divisors is an integer number (9956169).

Almost surely, 2^39790129 is an apocalyptic number.

It is an amenable number.

39790129 is a deficient number, since it is larger than the sum of its proper divisors (34547).

39790129 is a wasteful number, since it uses less digits than its factorization.

39790129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34546.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 39790129 is about 6307.9417403778. The cubic root of 39790129 is about 341.3960162650.

The spelling of 39790129 in words is "thirty-nine million, seven hundred ninety thousand, one hundred twenty-nine".