39959616 has 56 divisors (see below), whose sum is σ = 107212384. Its totient is φ = 13132800.

The previous prime is 39959597. The next prime is 39959627. The reversal of 39959616 is 61695993.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 12591 + ... + 15441.

Almost surely, 2^39959616 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 39959616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53606192).

39959616 is an abundant number, since it is smaller than the sum of its proper divisors (67252768).

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

39959616 is a wasteful number, since it uses less digits than its factorization.

39959616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939 (or 2929 counting only the distinct ones).

The product of its digits is 393660, while the sum is 48.

The square root of 39959616 is about 6321.3618785828. The cubic root of 39959616 is about 341.8800578000.

The spelling of 39959616 in words is "thirty-nine million, nine hundred fifty-nine thousand, six hundred sixteen".