39540208 has 20 divisors (see below), whose sum is σ = 77472720. Its totient is φ = 19547264.

The previous prime is 39540203. The next prime is 39540217. The reversal of 39540208 is 80204593.

It is a self number, because there is not a number n which added to its sum of digits gives 39540208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39540203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12460 + ... + 15307.

It is an arithmetic number, because the mean of its divisors is an integer number (3873636).

Almost surely, 2^39540208 is an apocalyptic number.

It is an amenable number.

39540208 is a deficient number, since it is larger than the sum of its proper divisors (37932512).

39540208 is a wasteful number, since it uses less digits than its factorization.

39540208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27864 (or 27858 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 39540208 is about 6288.1005081026. The cubic root of 39540208 is about 340.6797473711.

The spelling of 39540208 in words is "thirty-nine million, five hundred forty thousand, two hundred eight".