39049139 has 4 divisors (see below), whose sum is σ = 39133224. Its totient is φ = 38965056.

The previous prime is 39049133. The next prime is 39049183. The reversal of 39049139 is 93194093.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39049139 - 2¹² = 39045043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39049133) 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, 41342 + ... + 42275.

It is an arithmetic number, because the mean of its divisors is an integer number (9783306).

Almost surely, 2^39049139 is an apocalyptic number.

39049139 is a deficient number, since it is larger than the sum of its proper divisors (84085).

39049139 is an equidigital number, since it uses as much as digits as its factorization.

39049139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84084.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 39049139 is about 6248.9310285840. The cubic root of 39049139 is about 339.2635125069.

The spelling of 39049139 in words is "thirty-nine million, forty-nine thousand, one hundred thirty-nine".