993671855 has 16 divisors (see below), whose sum is σ = 1301608224. Its totient is φ = 722225280.

The previous prime is 993671849. The next prime is 993671869. The reversal of 993671855 is 558176399.

It is not a de Polignac number, because 993671855 - 2¹⁰ = 993670831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 993671797 and 993671806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103937 + ... + 113093.

It is an arithmetic number, because the mean of its divisors is an integer number (81350514).

Almost surely, 2^993671855 is an apocalyptic number.

993671855 is a deficient number, since it is larger than the sum of its proper divisors (307936369).

993671855 is a wasteful number, since it uses less digits than its factorization.

993671855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11146.

The product of its digits is 2041200, while the sum is 53.

The square root of 993671855 is about 31522.5610476053. The cubic root of 993671855 is about 997.8861531332.

The spelling of 993671855 in words is "nine hundred ninety-three million, six hundred seventy-one thousand, eight hundred fifty-five".