109457 has 4 divisors (see below), whose sum is σ = 114240. Its totient is φ = 104676.

The previous prime is 109453. The next prime is 109469. The reversal of 109457 is 754901.

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: 754901 = 7 ⋅107843.

It is a cyclic number.

It is not a de Polignac number, because 109457 - 2² = 109453 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109457.

It is not an unprimeable number, because it can be changed into a prime (109451) 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, 2357 + ... + 2402.

It is an arithmetic number, because the mean of its divisors is an integer number (28560).

2¹⁰⁹⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

109457 is a deficient number, since it is larger than the sum of its proper divisors (4783).

109457 is an equidigital number, since it uses as much as digits as its factorization.

109457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 109457 is about 330.8428630030. The cubic root of 109457 is about 47.8352278492.

The spelling of 109457 in words is "one hundred nine thousand, four hundred fifty-seven".