39150393971 has 4 divisors (see below), whose sum is σ = 42161962752. Its totient is φ = 36138825192.

The previous prime is 39150393959. The next prime is 39150393979. The reversal of 39150393971 is 17939305193.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39150393971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39150393979) by changing a digit.

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, 1505784371 + ... + 1505784396.

It is an arithmetic number, because the mean of its divisors is an integer number (10540490688).

Almost surely, 2^39150393971 is an apocalyptic number.

39150393971 is a deficient number, since it is larger than the sum of its proper divisors (3011568781).

39150393971 is a wasteful number, since it uses less digits than its factorization.

39150393971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011568780.

The product of its (nonzero) digits is 688905, while the sum is 50.

The spelling of 39150393971 in words is "thirty-nine billion, one hundred fifty million, three hundred ninety-three thousand, nine hundred seventy-one".