39981060 has 144 divisors (see below), whose sum is σ = 144789120. Its totient is φ = 9132480.

The previous prime is 39981049. The next prime is 39981083. The reversal of 39981060 is 6018993.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25705 + ... + 27215.

It is an arithmetic number, because the mean of its divisors is an integer number (1005480).

Almost surely, 2^39981060 is an apocalyptic number.

39981060 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39981060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72394560).

39981060 is an abundant number, since it is smaller than the sum of its proper divisors (104808060).

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

39981060 is a wasteful number, since it uses less digits than its factorization.

39981060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543 (or 1528 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 39981060 is about 6323.0578045753. The cubic root of 39981060 is about 341.9412025728.

The spelling of 39981060 in words is "thirty-nine million, nine hundred eighty-one thousand, sixty".