39493739494 has 64 divisors (see below), whose sum is σ = 68557674240. Its totient is φ = 16892910720.

The previous prime is 39493739489. The next prime is 39493739497. The reversal of 39493739494 is 49493739493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39493739497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15444064 + ... + 15446620.

It is an arithmetic number, because the mean of its divisors is an integer number (1071213660).

Almost surely, 2^39493739494 is an apocalyptic number.

39493739494 is a deficient number, since it is larger than the sum of its proper divisors (29063934746).

39493739494 is a wasteful number, since it uses less digits than its factorization.

39493739494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205.

The product of its digits is 79361856, while the sum is 64.

Subtracting 39493739494 from its reverse (49493739493), we obtain a palindrome (9999999999).

It can be divided in two parts, 3 and 9493739494, that multiplied together give a palindrome (28481218482).

The spelling of 39493739494 in words is "thirty-nine billion, four hundred ninety-three million, seven hundred thirty-nine thousand, four hundred ninety-four".