39945082 has 4 divisors (see below), whose sum is σ = 59917626. Its totient is φ = 19972540.

The previous prime is 39945079. The next prime is 39945091. The reversal of 39945082 is 28054993.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26615281 + 13329801 = 5159^2 + 3651^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9986269 + ... + 9986272.

Almost surely, 2^39945082 is an apocalyptic number.

39945082 is a deficient number, since it is larger than the sum of its proper divisors (19972544).

39945082 is a wasteful number, since it uses less digits than its factorization.

39945082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19972543.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 39945082 is about 6320.2121799826. The cubic root of 39945082 is about 341.8386035536.

The spelling of 39945082 in words is "thirty-nine million, nine hundred forty-five thousand, eighty-two".