395997724138 has 8 divisors (see below), whose sum is σ = 593999303040. Its totient is φ = 197997956460.

The previous prime is 395997724127. The next prime is 395997724189. The reversal of 395997724138 is 831427799593.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469543 + ... + 1006213.

It is an arithmetic number, because the mean of its divisors is an integer number (74249912880).

Almost surely, 2^395997724138 is an apocalyptic number.

395997724138 is a deficient number, since it is larger than the sum of its proper divisors (198001578902).

395997724138 is a wasteful number, since it uses less digits than its factorization.

395997724138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905612.

The product of its digits is 102876480, while the sum is 67.

The spelling of 395997724138 in words is "three hundred ninety-five billion, nine hundred ninety-seven million, seven hundred twenty-four thousand, one hundred thirty-eight".