39445216 has 24 divisors (see below), whose sum is σ = 81746280. Its totient is φ = 18684288.

The previous prime is 39445213. The next prime is 39445243. The reversal of 39445216 is 61254493.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39445213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31831 + ... + 33046.

It is an arithmetic number, because the mean of its divisors is an integer number (3406095).

Almost surely, 2^39445216 is an apocalyptic number.

It is an amenable number.

39445216 is an abundant number, since it is smaller than the sum of its proper divisors (42301064).

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

39445216 is a wasteful number, since it uses less digits than its factorization.

39445216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64906 (or 64898 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 39445216 is about 6280.5426517141. The cubic root of 39445216 is about 340.4067105277.

The spelling of 39445216 in words is "thirty-nine million, four hundred forty-five thousand, two hundred sixteen".