1393984418 has 16 divisors (see below), whose sum is σ = 2103929856. Its totient is φ = 692688240.

The previous prime is 1393984399. The next prime is 1393984439. The reversal of 1393984418 is 8144893931.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221333 + ... + 227543.

It is an arithmetic number, because the mean of its divisors is an integer number (131495616).

Almost surely, 2^1393984418 is an apocalyptic number.

1393984418 is a deficient number, since it is larger than the sum of its proper divisors (709945438).

1393984418 is a wasteful number, since it uses less digits than its factorization.

1393984418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6889.

The product of its digits is 746496, while the sum is 50.

The square root of 1393984418 is about 37336.1007337403. The cubic root of 1393984418 is about 1117.0843642791.

The spelling of 1393984418 in words is "one billion, three hundred ninety-three million, nine hundred eighty-four thousand, four hundred eighteen".