4393139 has 2 divisors, whose sum is σ = 4393140. Its totient is φ = 4393138.

The previous prime is 4393127. The next prime is 4393153. The reversal of 4393139 is 9313934.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4393139 is a prime.

It is a Chen prime.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2196569 + 2196570.

It is an arithmetic number, because the mean of its divisors is an integer number (2196570).

Almost surely, 2^4393139 is an apocalyptic number.

4393139 is a deficient number, since it is larger than the sum of its proper divisors (1).

4393139 is an equidigital number, since it uses as much as digits as its factorization.

4393139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 32.

The square root of 4393139 is about 2095.9816315989. The cubic root of 4393139 is about 163.7790376413.

The spelling of 4393139 in words is "four million, three hundred ninety-three thousand, one hundred thirty-nine".