1993984392 has 16 divisors (see below), whose sum is σ = 4984961040. Its totient is φ = 664661456.

The previous prime is 1993984381. The next prime is 1993984397. The reversal of 1993984392 is 2934893991.

It is not an unprimeable number, because it can be changed into a prime (1993984397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41541318 + ... + 41541365.

It is an arithmetic number, because the mean of its divisors is an integer number (311560065).

Almost surely, 2^1993984392 is an apocalyptic number.

1993984392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1993984392 is an abundant number, since it is smaller than the sum of its proper divisors (2990976648).

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

1993984392 is a wasteful number, since it uses less digits than its factorization.

1993984392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83082692 (or 83082688 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 57.

The square root of 1993984392 is about 44654.0523581007. The cubic root of 1993984392 is about 1258.6565827653.

The spelling of 1993984392 in words is "one billion, nine hundred ninety-three million, nine hundred eighty-four thousand, three hundred ninety-two".