39868873 has 4 divisors (see below), whose sum is σ = 43493328. Its totient is φ = 36244420.

The previous prime is 39868861. The next prime is 39868889. The reversal of 39868873 is 37886893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39868873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39868873.

It is not an unprimeable number, because it can be changed into a prime (39868273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1812211 + ... + 1812232.

It is an arithmetic number, because the mean of its divisors is an integer number (10873332).

Almost surely, 2^39868873 is an apocalyptic number.

It is an amenable number.

39868873 is a deficient number, since it is larger than the sum of its proper divisors (3624455).

39868873 is a wasteful number, since it uses less digits than its factorization.

39868873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624454.

The product of its digits is 1741824, while the sum is 52.

The square root of 39868873 is about 6314.1803110142. The cubic root of 39868873 is about 341.6210735381.

The spelling of 39868873 in words is "thirty-nine million, eight hundred sixty-eight thousand, eight hundred seventy-three".