109479049 has 4 divisors (see below), whose sum is σ = 110978836. Its totient is φ = 107979264.

The previous prime is 109479047. The next prime is 109479059. The reversal of 109479049 is 940974901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 940974901 = 83 ⋅11337047.

It can be written as a sum of positive squares in 2 ways, for example, as 54125449 + 55353600 = 7357^2 + 7440^2 .

It is not a de Polignac number, because 109479049 - 2¹ = 109479047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109478996 and 109479014.

It is not an unprimeable number, because it can be changed into a prime (109479047) 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, 749784 + ... + 749929.

It is an arithmetic number, because the mean of its divisors is an integer number (27744709).

Almost surely, 2^109479049 is an apocalyptic number.

It is an amenable number.

109479049 is a deficient number, since it is larger than the sum of its proper divisors (1499787).

109479049 is an equidigital number, since it uses as much as digits as its factorization.

109479049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499786.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 109479049 is about 10463.2236428359. The cubic root of 109479049 is about 478.3843960699.

The spelling of 109479049 in words is "one hundred nine million, four hundred seventy-nine thousand, forty-nine".