39966195238 has 8 divisors (see below), whose sum is σ = 59952859488. Its totient is φ = 19981908744.

The previous prime is 39966195211. The next prime is 39966195263. The reversal of 39966195238 is 83259166993.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 551806 + ... + 620017.

It is an arithmetic number, because the mean of its divisors is an integer number (7494107436).

Almost surely, 2^39966195238 is an apocalyptic number.

39966195238 is a deficient number, since it is larger than the sum of its proper divisors (19986664250).

39966195238 is a wasteful number, since it uses less digits than its factorization.

39966195238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188878.

The product of its digits is 18895680, while the sum is 61.

The spelling of 39966195238 in words is "thirty-nine billion, nine hundred sixty-six million, one hundred ninety-five thousand, two hundred thirty-eight".