39998616 has 64 divisors (see below), whose sum is σ = 117089280. Its totient is φ = 11147520.

The previous prime is 39998611. The next prime is 39998659. The reversal of 39998616 is 61689993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39998611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3985 + ... + 9791.

It is an arithmetic number, because the mean of its divisors is an integer number (1829520).

Almost surely, 2^39998616 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 39998616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58544640).

39998616 is an abundant number, since it is smaller than the sum of its proper divisors (77090664).

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

39998616 is a wasteful number, since it uses less digits than its factorization.

39998616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5864 (or 5860 counting only the distinct ones).

The product of its digits is 629856, while the sum is 51.

The square root of 39998616 is about 6324.4459045833. The cubic root of 39998616 is about 341.9912449453.

The spelling of 39998616 in words is "thirty-nine million, nine hundred ninety-eight thousand, six hundred sixteen".