109415797 has 4 divisors (see below), whose sum is σ = 111480300. Its totient is φ = 107351296.

The previous prime is 109415777. The next prime is 109415821. The reversal of 109415797 is 797514901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 797514901 = 149 ⋅5352449.

It can be written as a sum of positive squares in 2 ways, for example, as 39425841 + 69989956 = 6279^2 + 8366^2 .

It is a cyclic number.

It is not a de Polignac number, because 109415797 - 2¹¹ = 109413749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109415717) 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, 1032172 + ... + 1032277.

It is an arithmetic number, because the mean of its divisors is an integer number (27870075).

Almost surely, 2^109415797 is an apocalyptic number.

It is an amenable number.

109415797 is a deficient number, since it is larger than the sum of its proper divisors (2064503).

109415797 is an equidigital number, since it uses as much as digits as its factorization.

109415797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064502.

The product of its (nonzero) digits is 79380, while the sum is 43.

The square root of 109415797 is about 10460.2006194910. The cubic root of 109415797 is about 478.2922487615.

The spelling of 109415797 in words is "one hundred nine million, four hundred fifteen thousand, seven hundred ninety-seven".