39494939 has 16 divisors (see below), whose sum is σ = 45826560. Its totient is φ = 33660000.

The previous prime is 39494929. The next prime is 39494963. The reversal of 39494939 is 93949493.

39494939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-39494939 is a prime.

It is a super-2 number, since 2×39494939² = 3119700413227442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39494909) 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 15 ways as a sum of consecutive naturals, for example, 20174 + ... + 22044.

It is an arithmetic number, because the mean of its divisors is an integer number (2864160).

Almost surely, 2^39494939 is an apocalyptic number.

39494939 is a deficient number, since it is larger than the sum of its proper divisors (6331621).

39494939 is a wasteful number, since it uses less digits than its factorization.

With its successor (39494940) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (2002).

39494939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002.

The product of its digits is 944784, while the sum is 50.

The square root of 39494939 is about 6284.4999005490. The cubic root of 39494939 is about 340.5496846529.

It can be divided in two parts, 3949 and 4939, that added together give a palindrome (8888).

The spelling of 39494939 in words is "thirty-nine million, four hundred ninety-four thousand, nine hundred thirty-nine".