105540979 has 2 divisors, whose sum is σ = 105540980. Its totient is φ = 105540978.

The previous prime is 105540973. The next prime is 105540989. The reversal of 105540979 is 979045501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105540979 - 2³ = 105540971 is a prime.

It is a super-2 number, since 2×105540979² = 22277796496556882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105540971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52770489 + 52770490.

It is an arithmetic number, because the mean of its divisors is an integer number (52770490).

Almost surely, 2^105540979 is an apocalyptic number.

105540979 is a deficient number, since it is larger than the sum of its proper divisors (1).

105540979 is an equidigital number, since it uses as much as digits as its factorization.

105540979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 105540979 is about 10273.3139249222. The cubic root of 105540979 is about 472.5782243137.

The spelling of 105540979 in words is "one hundred five million, five hundred forty thousand, nine hundred seventy-nine".