109539473 has 4 divisors (see below), whose sum is σ = 109575168. Its totient is φ = 109503780.

The previous prime is 109539457. The next prime is 109539497. The reversal of 109539473 is 374935901.

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, and also an emirpimes, since its reverse is a distinct semiprime: 374935901 = 17 ⋅22055053.

It is a cyclic number.

It is not a de Polignac number, because 109539473 - 2⁴ = 109539457 is a prime.

It is a super-2 number, since 2×109539473² = 23997792290235458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109539473.

It is not an unprimeable number, because it can be changed into a prime (109539433) 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, 12761 + ... + 19542.

It is an arithmetic number, because the mean of its divisors is an integer number (27393792).

Almost surely, 2^109539473 is an apocalyptic number.

It is an amenable number.

109539473 is a deficient number, since it is larger than the sum of its proper divisors (35695).

109539473 is an equidigital number, since it uses as much as digits as its factorization.

109539473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35694.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 109539473 is about 10466.1106911785. The cubic root of 109539473 is about 478.4723903260.

The spelling of 109539473 in words is "one hundred nine million, five hundred thirty-nine thousand, four hundred seventy-three".