39497923922 has 18 divisors (see below), whose sum is σ = 59958033093. Its totient is φ = 19514696784.

The previous prime is 39497923921. The next prime is 39497923961. The reversal of 39497923922 is 22932979493.

It can be written as a sum of positive squares in 2 ways, for example, as 35306785801 + 4191138121 = 187901^2 + 64739^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=140531.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39497923921) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25013729 + ... + 25015307.

Almost surely, 2^39497923922 is an apocalyptic number.

39497923922 is a deficient number, since it is larger than the sum of its proper divisors (20460109171).

39497923922 is an frugal number, since it uses more digits than its factorization.

39497923922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338 (or 1670 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 59.

The spelling of 39497923922 in words is "thirty-nine billion, four hundred ninety-seven million, nine hundred twenty-three thousand, nine hundred twenty-two".