39471880 has 64 divisors (see below), whose sum is σ = 103207680. Its totient is φ = 13305600.

The previous prime is 39471857. The next prime is 39471881. The reversal of 39471880 is 8817493.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (39471881) 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, 15925 + ... + 18235.

It is an arithmetic number, because the mean of its divisors is an integer number (1612620).

Almost surely, 2^39471880 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 39471880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51603840).

39471880 is an abundant number, since it is smaller than the sum of its proper divisors (63735800).

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

39471880 is a wasteful number, since it uses less digits than its factorization.

39471880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390 (or 2386 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 39471880 is about 6282.6650396150. The cubic root of 39471880 is about 340.4833954512.

The spelling of 39471880 in words is "thirty-nine million, four hundred seventy-one thousand, eight hundred eighty".