39959780 has 48 divisors (see below), whose sum is σ = 97144320. Its totient is φ = 13523328.

The previous prime is 39959779. The next prime is 39959791. The reversal of 39959780 is 8795993.

39959780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9254 + ... + 12866.

It is an arithmetic number, because the mean of its divisors is an integer number (2023840).

Almost surely, 2^39959780 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 39959780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48572160).

39959780 is an abundant number, since it is smaller than the sum of its proper divisors (57184540).

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

39959780 is a wasteful number, since it uses less digits than its factorization.

39959780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708 (or 3706 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 39959780 is about 6321.3748504578. The cubic root of 39959780 is about 341.8805255076.

The spelling of 39959780 in words is "thirty-nine million, nine hundred fifty-nine thousand, seven hundred eighty".