105812399 has 8 divisors (see below), whose sum is σ = 131922048. Its totient is φ = 82451160.

The previous prime is 105812383. The next prime is 105812401. The reversal of 105812399 is 993218501.

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

It is not a de Polignac number, because 105812399 - 2⁴ = 105812383 is a prime.

It is a super-2 number, since 2×105812399² = 22392527564270402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105812309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687017 + ... + 687170.

It is an arithmetic number, because the mean of its divisors is an integer number (16490256).

Almost surely, 2^105812399 is an apocalyptic number.

105812399 is a deficient number, since it is larger than the sum of its proper divisors (26109649).

105812399 is a wasteful number, since it uses less digits than its factorization.

105812399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374205.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 105812399 is about 10286.5153963818. The cubic root of 105812399 is about 472.9829877356.

The spelling of 105812399 in words is "one hundred five million, eight hundred twelve thousand, three hundred ninety-nine".