39394139394 has 8 divisors (see below), whose sum is σ = 78788278800. Its totient is φ = 13131379796.

The previous prime is 39394139303. The next prime is 39394139417. The reversal of 39394139394 is 49393149393.

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

39394139394 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3282844944 + ... + 3282844955.

It is an arithmetic number, because the mean of its divisors is an integer number (9848534850).

Almost surely, 2^39394139394 is an apocalyptic number.

39394139394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39394139394 is a wasteful number, since it uses less digits than its factorization.

39394139394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6565689904.

The product of its digits is 8503056, while the sum is 57.

Subtracting 39394139394 from its reverse (49393149393), we obtain a palindrome (9999009999).

The spelling of 39394139394 in words is "thirty-nine billion, three hundred ninety-four million, one hundred thirty-nine thousand, three hundred ninety-four".