39922147845 has 12 divisors (see below), whose sum is σ = 69198389676. Its totient is φ = 21291812160.

The previous prime is 39922147831. The next prime is 39922147873. The reversal of 39922147845 is 54874122993.

It can be written as a sum of positive squares in 2 ways, for example, as 30928849956 + 8993297889 = 175866^2 + 94833^2 .

It is not a de Polignac number, because 39922147845 - 2¹⁶ = 39922082309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39922147791 and 39922147800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 443579376 + ... + 443579465.

It is an arithmetic number, because the mean of its divisors is an integer number (5766532473).

Almost surely, 2^39922147845 is an apocalyptic number.

It is an amenable number.

39922147845 is a deficient number, since it is larger than the sum of its proper divisors (29276241831).

39922147845 is a wasteful number, since it uses less digits than its factorization.

39922147845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887158852 (or 887158849 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 39922147845 in words is "thirty-nine billion, nine hundred twenty-two million, one hundred forty-seven thousand, eight hundred forty-five".