39989560 has 64 divisors (see below), whose sum is σ = 98794080. Its totient is φ = 14476800.

The previous prime is 39989549. The next prime is 39989567. The reversal of 39989560 is 6598993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39989567) 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, 26835 + ... + 28285.

Almost surely, 2^39989560 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 39989560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49397040).

39989560 is an abundant number, since it is smaller than the sum of its proper divisors (58804520).

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

39989560 is a wasteful number, since it uses less digits than its factorization.

39989560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528 (or 1524 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 39989560 is about 6323.7299120060. The cubic root of 39989560 is about 341.9654331649.

The spelling of 39989560 in words is "thirty-nine million, nine hundred eighty-nine thousand, five hundred sixty".