105397279 has 4 divisors (see below), whose sum is σ = 113504776. Its totient is φ = 97289784.

The previous prime is 105397273. The next prime is 105397289. The reversal of 105397279 is 972793501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972793501 = 1447 ⋅672283.

It is a cyclic number.

It is not a de Polignac number, because 105397279 - 2⁷ = 105397151 is a prime.

It is a super-2 number, since 2×105397279² = 22217172841207682, 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 (105397273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4053729 + ... + 4053754.

It is an arithmetic number, because the mean of its divisors is an integer number (28376194).

Almost surely, 2^105397279 is an apocalyptic number.

105397279 is a deficient number, since it is larger than the sum of its proper divisors (8107497).

105397279 is an equidigital number, since it uses as much as digits as its factorization.

105397279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8107496.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 105397279 is about 10266.3176942855. The cubic root of 105397279 is about 472.3636462554.

The spelling of 105397279 in words is "one hundred five million, three hundred ninety-seven thousand, two hundred seventy-nine".