105393993 has 4 divisors (see below), whose sum is σ = 140525328. Its totient is φ = 70262660.

The previous prime is 105393973. The next prime is 105394039. The reversal of 105393993 is 399393501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105393993 - 2⁶ = 105393929 is a prime.

It is a super-2 number, since 2×105393993² = 22215787520968098, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105393973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17565663 + ... + 17565668.

It is an arithmetic number, because the mean of its divisors is an integer number (35131332).

Almost surely, 2^105393993 is an apocalyptic number.

It is an amenable number.

105393993 is a deficient number, since it is larger than the sum of its proper divisors (35131335).

105393993 is an equidigital number, since it uses as much as digits as its factorization.

105393993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35131334.

The product of its (nonzero) digits is 98415, while the sum is 42.

The square root of 105393993 is about 10266.1576551308. The cubic root of 105393993 is about 472.3587372005.

The spelling of 105393993 in words is "one hundred five million, three hundred ninety-three thousand, nine hundred ninety-three".