39449291378 has 32 divisors (see below), whose sum is σ = 68073543936. Its totient is φ = 16795453248.

The previous prime is 39449291377. The next prime is 39449291393. The reversal of 39449291378 is 87319294493.

It is not an unprimeable number, because it can be changed into a prime (39449291377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3319475 + ... + 3331337.

It is an arithmetic number, because the mean of its divisors is an integer number (2127298248).

Almost surely, 2^39449291378 is an apocalyptic number.

39449291378 is a deficient number, since it is larger than the sum of its proper divisors (28624252558).

39449291378 is a wasteful number, since it uses less digits than its factorization.

39449291378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13418.

The product of its digits is 11757312, while the sum is 59.

The spelling of 39449291378 in words is "thirty-nine billion, four hundred forty-nine million, two hundred ninety-one thousand, three hundred seventy-eight".