39224643872 has 54 divisors (see below), whose sum is σ = 78068596473. Its totient is φ = 19400015232.

The previous prime is 39224643827. The next prime is 39224643901. The reversal of 39224643872 is 27834642293.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 37467022096 + 1757621776 = 193564^2 + 41924^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=140044.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39224643872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 175895153 + ... + 175895375.

Almost surely, 2^39224643872 is an apocalyptic number.

39224643872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

39224643872 is a deficient number, since it is larger than the sum of its proper divisors (38843952601).

39224643872 is an frugal number, since it uses more digits than its factorization.

39224643872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770 (or 382 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 50.

Multiplying 39224643872 by its sum of digits (50), we get a square (1961232193600 = 1400440²).

The spelling of 39224643872 in words is "thirty-nine billion, two hundred twenty-four million, six hundred forty-three thousand, eight hundred seventy-two".