993921366 has 32 divisors (see below), whose sum is σ = 2022628608. Its totient is φ = 325559520.

The previous prime is 993921301. The next prime is 993921367. The reversal of 993921366 is 663129399.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993921367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74820 + ... + 87096.

It is an arithmetic number, because the mean of its divisors is an integer number (63207144).

Almost surely, 2^993921366 is an apocalyptic number.

993921366 is an abundant number, since it is smaller than the sum of its proper divisors (1028707242).

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

993921366 is a wasteful number, since it uses less digits than its factorization.

993921366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12516.

The product of its digits is 472392, while the sum is 48.

The square root of 993921366 is about 31526.5184566898. The cubic root of 993921366 is about 997.9696692134.

The spelling of 993921366 in words is "nine hundred ninety-three million, nine hundred twenty-one thousand, three hundred sixty-six".