39945160 has 16 divisors (see below), whose sum is σ = 89876700. Its totient is φ = 15978048.

The previous prime is 39945119. The next prime is 39945173. The reversal of 39945160 is 6154993.

It can be written as a sum of positive squares in 2 ways, for example, as 39463524 + 481636 = 6282^2 + 694^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499275 + ... + 499354.

Almost surely, 2^39945160 is an apocalyptic number.

It is an amenable number.

39945160 is an abundant number, since it is smaller than the sum of its proper divisors (49931540).

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

39945160 is a wasteful number, since it uses less digits than its factorization.

39945160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998640 (or 998636 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 39945160 is about 6320.2183506585. The cubic root of 39945160 is about 341.8388260540.

The spelling of 39945160 in words is "thirty-nine million, nine hundred forty-five thousand, one hundred sixty".