39988760 has 128 divisors (see below), whose sum is σ = 112803840. Its totient is φ = 12441600.

The previous prime is 39988759. The next prime is 39988783. The reversal of 39988760 is 6788993.

It is a junction number, because it is equal to n+sod(n) for n = 39988699 and 39988708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147425 + ... + 147695.

It is an arithmetic number, because the mean of its divisors is an integer number (881280).

Almost surely, 2^39988760 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 39988760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56401920).

39988760 is an abundant number, since it is smaller than the sum of its proper divisors (72815080).

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

39988760 is a wasteful number, since it uses less digits than its factorization.

39988760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 39988760 is about 6323.6666578813. Note that the first 4 decimals coincide. The cubic root of 39988760 is about 341.9631527850.

The spelling of 39988760 in words is "thirty-nine million, nine hundred eighty-eight thousand, seven hundred sixty".