39129849 has 12 divisors (see below), whose sum is σ = 61659312. Its totient is φ = 23715000.

The previous prime is 39129833. The next prime is 39129863. The reversal of 39129849 is 94892193.

39129849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39129849 - 2⁴ = 39129833 is a prime.

It is a super-2 number, since 2×39129849² = 3062290165525602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39129889) 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 11 ways as a sum of consecutive naturals, for example, 197527 + ... + 197724.

It is an arithmetic number, because the mean of its divisors is an integer number (5138276).

Almost surely, 2^39129849 is an apocalyptic number.

It is an amenable number.

39129849 is a deficient number, since it is larger than the sum of its proper divisors (22529463).

39129849 is a wasteful number, since it uses less digits than its factorization.

39129849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395268 (or 395265 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 39129849 is about 6255.3855996253. The cubic root of 39129849 is about 339.4970909785.

The spelling of 39129849 in words is "thirty-nine million, one hundred twenty-nine thousand, eight hundred forty-nine".