39947500 has 90 divisors (see below), whose sum is σ = 95235140. Its totient is φ = 14616000.

The previous prime is 39947491. The next prime is 39947521. The reversal of 39947500 is 574993.

It is a self number, because there is not a number n which added to its sum of digits gives 39947500.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1377486 + ... + 1377514.

Almost surely, 2^39947500 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 39947500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47617570).

39947500 is an abundant number, since it is smaller than the sum of its proper divisors (55287640).

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

39947500 is a wasteful number, since it uses less digits than its factorization.

39947500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 39947500 is about 6320.4034681340. The cubic root of 39947500 is about 341.8455009322.

The spelling of 39947500 in words is "thirty-nine million, nine hundred forty-seven thousand, five hundred".