993693911 has 16 divisors (see below), whose sum is σ = 1204162560. Its totient is φ = 800496000.

The previous prime is 993693907. The next prime is 993693937. The reversal of 993693911 is 119396399.

It is not a de Polignac number, because 993693911 - 2² = 993693907 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 993693911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993693991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83810 + ... + 94928.

It is an arithmetic number, because the mean of its divisors is an integer number (75260160).

Almost surely, 2^993693911 is an apocalyptic number.

993693911 is a deficient number, since it is larger than the sum of its proper divisors (210468649).

993693911 is a wasteful number, since it uses less digits than its factorization.

993693911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11894.

The product of its digits is 354294, while the sum is 50.

The square root of 993693911 is about 31522.9108903350. The cubic root of 993693911 is about 997.8935362594.

The spelling of 993693911 in words is "nine hundred ninety-three million, six hundred ninety-three thousand, nine hundred eleven".