39813216 has 24 divisors (see below), whose sum is σ = 104509944. Its totient is φ = 13271040.

The previous prime is 39813211. The next prime is 39813217. The reversal of 39813216 is 61231893.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39813211) 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, 207265 + ... + 207456.

It is an arithmetic number, because the mean of its divisors is an integer number (4354581).

Almost surely, 2^39813216 is an apocalyptic number.

It is an amenable number.

39813216 is an abundant number, since it is smaller than the sum of its proper divisors (64696728).

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

39813216 is a wasteful number, since it uses less digits than its factorization.

39813216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414734 (or 414726 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 39813216 is about 6309.7714697127. The cubic root of 39813216 is about 341.4620316825.

The spelling of 39813216 in words is "thirty-nine million, eight hundred thirteen thousand, two hundred sixteen".