993944418 has 16 divisors (see below), whose sum is σ = 2003543040. Its totient is φ = 328705776.

The previous prime is 993944387. The next prime is 993944437. The reversal of 993944418 is 814449399.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 651433 + ... + 652956.

It is an arithmetic number, because the mean of its divisors is an integer number (125221440).

Almost surely, 2^993944418 is an apocalyptic number.

993944418 is an abundant number, since it is smaller than the sum of its proper divisors (1009598622).

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

993944418 is a wasteful number, since it uses less digits than its factorization.

993944418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304521.

The product of its digits is 1119744, while the sum is 51.

The square root of 993944418 is about 31526.8840515519. The cubic root of 993944418 is about 997.9773844512.

The spelling of 993944418 in words is "nine hundred ninety-three million, nine hundred forty-four thousand, four hundred eighteen".