39966140379 has 8 divisors (see below), whose sum is σ = 58132567872. Its totient is φ = 24221903240.

The previous prime is 39966140321. The next prime is 39966140381. The reversal of 39966140379 is 97304166993.

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

It is a cyclic number.

It is not a de Polignac number, because 39966140379 - 2⁷ = 39966140251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39966140309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605547549 + ... + 605547614.

It is an arithmetic number, because the mean of its divisors is an integer number (7266570984).

Almost surely, 2^39966140379 is an apocalyptic number.

39966140379 is a deficient number, since it is larger than the sum of its proper divisors (18166427493).

39966140379 is a wasteful number, since it uses less digits than its factorization.

39966140379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211095177.

The product of its (nonzero) digits is 6613488, while the sum is 57.

The spelling of 39966140379 in words is "thirty-nine billion, nine hundred sixty-six million, one hundred forty thousand, three hundred seventy-nine".