39986488394 has 8 divisors (see below), whose sum is σ = 60002062848. Its totient is φ = 19985800780.

The previous prime is 39986488387. The next prime is 39986488397. The reversal of 39986488394 is 49388468993.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39986488397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3714992 + ... + 3725739.

It is an arithmetic number, because the mean of its divisors is an integer number (7500257856).

Almost surely, 2^39986488394 is an apocalyptic number.

39986488394 is a deficient number, since it is larger than the sum of its proper divisors (20015574454).

39986488394 is a wasteful number, since it uses less digits than its factorization.

39986488394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7443420.

The product of its digits is 322486272, while the sum is 71.

The spelling of 39986488394 in words is "thirty-nine billion, nine hundred eighty-six million, four hundred eighty-eight thousand, three hundred ninety-four".