193409089 has 4 divisors (see below), whose sum is σ = 197524224. Its totient is φ = 189293956.

The previous prime is 193409087. The next prime is 193409107. The reversal of 193409089 is 980904391.

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 193409089 - 2¹ = 193409087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193409087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2057497 + ... + 2057590.

It is an arithmetic number, because the mean of its divisors is an integer number (49381056).

Almost surely, 2^193409089 is an apocalyptic number.

It is an amenable number.

193409089 is a deficient number, since it is larger than the sum of its proper divisors (4115135).

193409089 is an equidigital number, since it uses as much as digits as its factorization.

193409089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115134.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 193409089 is about 13907.1596309239. The cubic root of 193409089 is about 578.3076799232.

The spelling of 193409089 in words is "one hundred ninety-three million, four hundred nine thousand, eighty-nine".