39481980 has 48 divisors (see below), whose sum is σ = 111582240. Its totient is φ = 10430208.

The previous prime is 39481969. The next prime is 39481987. The reversal of 39481980 is 8918493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39481987) 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, 3522 + ... + 9558.

It is an arithmetic number, because the mean of its divisors is an integer number (2324630).

Almost surely, 2^39481980 is an apocalyptic number.

39481980 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 39481980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55791120).

39481980 is an abundant number, since it is smaller than the sum of its proper divisors (72100260).

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

39481980 is a wasteful number, since it uses less digits than its factorization.

39481980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6158 (or 6156 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 39481980 is about 6283.4687872225. The cubic root of 39481980 is about 340.5124337524.

The spelling of 39481980 in words is "thirty-nine million, four hundred eighty-one thousand, nine hundred eighty".