39440004394 has 32 divisors (see below), whose sum is σ = 68684906880. Its totient is φ = 16634965248.

The previous prime is 39440004361. The next prime is 39440004497. The reversal of 39440004394 is 49340004493.

It is an unprimeable number.

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, 1009822 + ... + 1048150.

It is an arithmetic number, because the mean of its divisors is an integer number (2146403340).

Almost surely, 2^39440004394 is an apocalyptic number.

39440004394 is a deficient number, since it is larger than the sum of its proper divisors (29244902486).

39440004394 is a wasteful number, since it uses less digits than its factorization.

39440004394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39502.

The product of its (nonzero) digits is 186624, while the sum is 40.

Subtracting 39440004394 from its reverse (49340004493), we obtain a palindrome (9900000099).

The spelling of 39440004394 in words is "thirty-nine billion, four hundred forty million, four thousand, three hundred ninety-four".