193224139 has 4 divisors (see below), whose sum is σ = 194455024. Its totient is φ = 191993256.

The previous prime is 193224137. The next prime is 193224151. The reversal of 193224139 is 931422391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931422391 = 6397 ⋅145603.

It is a cyclic number.

It is not a de Polignac number, because 193224139 - 2¹ = 193224137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193224137) 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, 615207 + ... + 615520.

It is an arithmetic number, because the mean of its divisors is an integer number (48613756).

Almost surely, 2^193224139 is an apocalyptic number.

193224139 is a deficient number, since it is larger than the sum of its proper divisors (1230885).

193224139 is a wasteful number, since it uses less digits than its factorization.

193224139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230884.

The product of its digits is 11664, while the sum is 34.

The square root of 193224139 is about 13900.5085878179. The cubic root of 193224139 is about 578.1232830102.

The spelling of 193224139 in words is "one hundred ninety-three million, two hundred twenty-four thousand, one hundred thirty-nine".