39444444 has 72 divisors (see below), whose sum is σ = 108697680. Its totient is φ = 11987712.

The previous prime is 39444409. The next prime is 39444467. The reversal of 39444444 is 44444493.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

39444444 is a modest number, since divided by 4444 gives 3944 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 39444399 and 39444408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41179 + ... + 42125.

It is an arithmetic number, because the mean of its divisors is an integer number (1509690).

Almost surely, 2^39444444 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 39444444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54348840).

39444444 is an abundant number, since it is smaller than the sum of its proper divisors (69253236).

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

39444444 is a wasteful number, since it uses less digits than its factorization.

39444444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059 (or 1054 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 39444444 is about 6280.4811917559. The cubic root of 39444444 is about 340.4044897624.

The spelling of 39444444 in words is "thirty-nine million, four hundred forty-four thousand, four hundred forty-four".