105144393 has 4 divisors (see below), whose sum is σ = 140192528. Its totient is φ = 70096260.

The previous prime is 105144379. The next prime is 105144409. The reversal of 105144393 is 393441501.

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 not a de Polignac number, because 105144393 - 2⁹ = 105143881 is a prime.

It is a super-2 number, since 2×105144393² = 22110686758676898, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 105144393.

It is not an unprimeable number, because it can be changed into a prime (105144323) 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, 17524063 + ... + 17524068.

It is an arithmetic number, because the mean of its divisors is an integer number (35048132).

Almost surely, 2^105144393 is an apocalyptic number.

It is an amenable number.

105144393 is a deficient number, since it is larger than the sum of its proper divisors (35048135).

105144393 is an equidigital number, since it uses as much as digits as its factorization.

105144393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35048134.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 105144393 is about 10253.9940023388. The cubic root of 105144393 is about 471.9855535773.

Adding to 105144393 its reverse (393441501), we get a palindrome (498585894).

The spelling of 105144393 in words is "one hundred five million, one hundred forty-four thousand, three hundred ninety-three".