39494139 has 8 divisors (see below), whose sum is σ = 53293632. Its totient is φ = 26012040.

The previous prime is 39494123. The next prime is 39494159. The reversal of 39494139 is 93149493.

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

It is not a de Polignac number, because 39494139 - 2⁴ = 39494123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39494139.

It is not an unprimeable number, because it can be changed into a prime (39494159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79057 + ... + 79554.

It is an arithmetic number, because the mean of its divisors is an integer number (6661704).

Almost surely, 2^39494139 is an apocalyptic number.

39494139 is a deficient number, since it is larger than the sum of its proper divisors (13799493).

39494139 is a wasteful number, since it uses less digits than its factorization.

39494139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158697.

The product of its digits is 104976, while the sum is 42.

The square root of 39494139 is about 6284.4362515662. The cubic root of 39494139 is about 340.5473852732.

The spelling of 39494139 in words is "thirty-nine million, four hundred ninety-four thousand, one hundred thirty-nine".