209093 has 4 divisors (see below), whose sum is σ = 218208. Its totient is φ = 199980.

The previous prime is 209089. The next prime is 209123. The reversal of 209093 is 390902.

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.

It is a cyclic number.

It is not a de Polignac number, because 209093 - 2² = 209089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 9091 = 209093 / (2 + 0 + 9 + 0 + 9 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209063) 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, 4523 + ... + 4568.

It is an arithmetic number, because the mean of its divisors is an integer number (54552).

2²⁰⁹⁰⁹³ is an apocalyptic number.

209093 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

209093 is a deficient number, since it is larger than the sum of its proper divisors (9115).

209093 is an equidigital number, since it uses as much as digits as its factorization.

209093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9114.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 209093 is about 457.2668804976. The cubic root of 209093 is about 59.3535224258.

Adding to 209093 its reverse (390902), we get a palindrome (599995).

The spelling of 209093 in words is "two hundred nine thousand, ninety-three".