993955 has 8 divisors (see below), whose sum is σ = 1198800. Its totient is φ = 791136.

The previous prime is 993943. The next prime is 993961. The reversal of 993955 is 559399.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 993955 - 2⁷ = 993827 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 976 + ... + 1714.

It is an arithmetic number, because the mean of its divisors is an integer number (149850).

2⁹⁹³⁹⁵⁵ is an apocalyptic number.

993955 is a deficient number, since it is larger than the sum of its proper divisors (204845).

993955 is a wasteful number, since it uses less digits than its factorization.

993955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013.

The product of its digits is 54675, while the sum is 40.

The square root of 993955 is about 996.9729183885. The cubic root of 993955 is about 99.7980926084.

It can be divided in two parts, 9939 and 55, that multiplied together give a palindrome (546645).

The spelling of 993955 in words is "nine hundred ninety-three thousand, nine hundred fifty-five".