993771392 has 16 divisors (see below), whose sum is σ = 1979779200. Its totient is φ = 496885632.

The previous prime is 993771379. The next prime is 993771413. The reversal of 993771392 is 293177399.

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 993771392.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3881792 + ... + 3882047.

It is an arithmetic number, because the mean of its divisors is an integer number (123736200).

Almost surely, 2^993771392 is an apocalyptic number.

It is an amenable number.

993771392 is a deficient number, since it is larger than the sum of its proper divisors (986007808).

993771392 is an equidigital number, since it uses as much as digits as its factorization.

993771392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763853 (or 7763841 counting only the distinct ones).

The product of its digits is 642978, while the sum is 50.

The square root of 993771392 is about 31524.1398296607. The cubic root of 993771392 is about 997.9194717374.

The spelling of 993771392 in words is "nine hundred ninety-three million, seven hundred seventy-one thousand, three hundred ninety-two".