39998816 has 48 divisors (see below), whose sum is σ = 92525328. Its totient is φ = 16780800.

The previous prime is 39998797. The next prime is 39998831. The reversal of 39998816 is 61889993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206 + ... + 8946.

It is an arithmetic number, because the mean of its divisors is an integer number (1927611).

Almost surely, 2^39998816 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 39998816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46262664).

39998816 is an abundant number, since it is smaller than the sum of its proper divisors (52526512).

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

39998816 is a wasteful number, since it uses less digits than its factorization.

39998816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8775 (or 8767 counting only the distinct ones).

The product of its digits is 839808, while the sum is 53.

The square root of 39998816 is about 6324.4617162253. The cubic root of 39998816 is about 341.9918149495.

It can be divided in two parts, 399988 and 16, that added together give a palindrome (400004).

The spelling of 39998816 in words is "thirty-nine million, nine hundred ninety-eight thousand, eight hundred sixteen".