39172144 has 40 divisors (see below), whose sum is σ = 83476800. Its totient is φ = 17659200.

The previous prime is 39172123. The next prime is 39172163. The reversal of 39172144 is 44127193.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22207 + ... + 23905.

It is an arithmetic number, because the mean of its divisors is an integer number (2086920).

Almost surely, 2^39172144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39172144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41738400).

39172144 is an abundant number, since it is smaller than the sum of its proper divisors (44304656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39172144 is a wasteful number, since it uses less digits than its factorization.

39172144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849 (or 1843 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 39172144 is about 6258.7653734583. The cubic root of 39172144 is about 339.6193664233.

The spelling of 39172144 in words is "thirty-nine million, one hundred seventy-two thousand, one hundred forty-four".