4321139 has 2 divisors, whose sum is σ = 4321140. Its totient is φ = 4321138.

The previous prime is 4321129. The next prime is 4321157. The reversal of 4321139 is 9311234.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4321139 - 2⁴ = 4321123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4321129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160569 + 2160570.

It is an arithmetic number, because the mean of its divisors is an integer number (2160570).

Almost surely, 2^4321139 is an apocalyptic number.

4321139 is a deficient number, since it is larger than the sum of its proper divisors (1).

4321139 is an equidigital number, since it uses as much as digits as its factorization.

4321139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 4321139 is about 2078.7349518397. The cubic root of 4321139 is about 162.8793692642.

The spelling of 4321139 in words is "four million, three hundred twenty-one thousand, one hundred thirty-nine".