193340839 has 4 divisors (see below), whose sum is σ = 194752224. Its totient is φ = 191929456.

The previous prime is 193340809. The next prime is 193340869. The reversal of 193340839 is 938043391.

193340839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (193340809) and next prime (193340869).

It is a cyclic number.

It is not a de Polignac number, because 193340839 - 2¹⁹ = 192816551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193340809) 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, 705487 + ... + 705760.

It is an arithmetic number, because the mean of its divisors is an integer number (48688056).

Almost surely, 2^193340839 is an apocalyptic number.

193340839 is a deficient number, since it is larger than the sum of its proper divisors (1411385).

193340839 is a wasteful number, since it uses less digits than its factorization.

193340839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411384.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 193340839 is about 13904.7056423356. The cubic root of 193340839 is about 578.2396477142.

The spelling of 193340839 in words is "one hundred ninety-three million, three hundred forty thousand, eight hundred thirty-nine".