39090044 has 54 divisors (see below), whose sum is σ = 82248264. Its totient is φ = 16205280.

The previous prime is 39090043. The next prime is 39090047. The reversal of 39090044 is 44009093.

It is a happy number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 39089989 and 39090016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39090043) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 550529 + ... + 550599.

It is an arithmetic number, because the mean of its divisors is an integer number (1523116).

Almost surely, 2^39090044 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 39090044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41124132).

39090044 is an abundant number, since it is smaller than the sum of its proper divisors (43158220).

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

39090044 is a wasteful number, since it uses less digits than its factorization.

39090044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 39090044 is about 6252.2031316969. The cubic root of 39090044 is about 339.3819336504.

The spelling of 39090044 in words is "thirty-nine million, ninety thousand, forty-four".