993857396 has 72 divisors (see below), whose sum is σ = 2198649600. Its totient is φ = 390458880.

The previous prime is 993857363. The next prime is 993857399. The reversal of 993857396 is 693758399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993857399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111140 + ... + 119748.

It is an arithmetic number, because the mean of its divisors is an integer number (30536800).

Almost surely, 2^993857396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 993857396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1099324800).

993857396 is an abundant number, since it is smaller than the sum of its proper divisors (1204792204).

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

993857396 is a wasteful number, since it uses less digits than its factorization.

993857396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8677 (or 8668 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 59.

The square root of 993857396 is about 31525.5038976382. The cubic root of 993857396 is about 997.9482585695.

The spelling of 993857396 in words is "nine hundred ninety-three million, eight hundred fifty-seven thousand, three hundred ninety-six".