39971080 has 64 divisors (see below), whose sum is σ = 97511040. Its totient is φ = 14687232.

The previous prime is 39971069. The next prime is 39971119. The reversal of 39971080 is 8017993.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28557 + ... + 29923.

It is an arithmetic number, because the mean of its divisors is an integer number (1523610).

Almost surely, 2^39971080 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 39971080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48755520).

39971080 is an abundant number, since it is smaller than the sum of its proper divisors (57539960).

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

39971080 is a wasteful number, since it uses less digits than its factorization.

39971080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438 (or 1434 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 39971080 is about 6322.2685801854. The cubic root of 39971080 is about 341.9127486233.

The spelling of 39971080 in words is "thirty-nine million, nine hundred seventy-one thousand, eighty".