193242889 has 4 divisors (see below), whose sum is σ = 220849024. Its totient is φ = 165636756.

The previous prime is 193242853. The next prime is 193242949. The reversal of 193242889 is 988242391.

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 193242889 - 2⁷ = 193242761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193242839) 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, 13803057 + ... + 13803070.

It is an arithmetic number, because the mean of its divisors is an integer number (55212256).

Almost surely, 2^193242889 is an apocalyptic number.

It is an amenable number.

193242889 is a deficient number, since it is larger than the sum of its proper divisors (27606135).

193242889 is an equidigital number, since it uses as much as digits as its factorization.

193242889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27606134.

The product of its digits is 248832, while the sum is 46.

The square root of 193242889 is about 13901.1830072120. The cubic root of 193242889 is about 578.1419822973.

The spelling of 193242889 in words is "one hundred ninety-three million, two hundred forty-two thousand, eight hundred eighty-nine".