39794412942647 has 32 divisors (see below), whose sum is σ = 44124269460480. Its totient is φ = 35885602975200.

The previous prime is 39794412942517. The next prime is 39794412942659. The reversal of 39794412942647 is 74624921449793.

It is not a de Polignac number, because 39794412942647 - 2⁴⁰ = 38694901314871 is a prime.

It is a super-2 number, since 2×39794412942647² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39794412942047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100888622 + ... + 101282292.

It is an arithmetic number, because the mean of its divisors is an integer number (1378883420640).

Almost surely, 2^{39794412942647} is an apocalyptic number.

39794412942647 is a deficient number, since it is larger than the sum of its proper divisors (4329856517833).

39794412942647 is a wasteful number, since it uses less digits than its factorization.

39794412942647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394316 (or 394294 counting only the distinct ones).

The product of its digits is 658409472, while the sum is 71.

The spelling of 39794412942647 in words is "thirty-nine trillion, seven hundred ninety-four billion, four hundred twelve million, nine hundred forty-two thousand, six hundred forty-seven".