39894218 has 32 divisors (see below), whose sum is σ = 74363520. Its totient is φ = 15629760.

The previous prime is 39894203. The next prime is 39894229. The reversal of 39894218 is 81249893.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18833 + ... + 20843.

It is an arithmetic number, because the mean of its divisors is an integer number (2323860).

Almost surely, 2^39894218 is an apocalyptic number.

39894218 is a deficient number, since it is larger than the sum of its proper divisors (34469302).

39894218 is a wasteful number, since it uses less digits than its factorization.

39894218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142.

The product of its digits is 124416, while the sum is 44.

The square root of 39894218 is about 6316.1869826660. The cubic root of 39894218 is about 341.6934487301.

The spelling of 39894218 in words is "thirty-nine million, eight hundred ninety-four thousand, two hundred eighteen".