39471972915 has 8 divisors (see below), whose sum is σ = 63155156688. Its totient is φ = 21051718880.

The previous prime is 39471972893. The next prime is 39471972929. The reversal of 39471972915 is 51927917493.

It is a happy number.

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

It is not a de Polignac number, because 39471972915 - 2⁹ = 39471972403 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315732416 + ... + 1315732445.

It is an arithmetic number, because the mean of its divisors is an integer number (7894394586).

Almost surely, 2^39471972915 is an apocalyptic number.

39471972915 is a deficient number, since it is larger than the sum of its proper divisors (23683183773).

39471972915 is a wasteful number, since it uses less digits than its factorization.

39471972915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631464869.

The product of its digits is 4286520, while the sum is 57.

The spelling of 39471972915 in words is "thirty-nine billion, four hundred seventy-one million, nine hundred seventy-two thousand, nine hundred fifteen".