34239839 has 2 divisors, whose sum is σ = 34239840. Its totient is φ = 34239838.

The previous prime is 34239833. The next prime is 34239859. The reversal of 34239839 is 93893243.

It is a weak prime.

It is an emirp because it is prime and its reverse (93893243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34239839 - 2⁴ = 34239823 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 34239796 and 34239805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34239833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17119919 + 17119920.

It is an arithmetic number, because the mean of its divisors is an integer number (17119920).

Almost surely, 2^34239839 is an apocalyptic number.

34239839 is a deficient number, since it is larger than the sum of its proper divisors (1).

34239839 is an equidigital number, since it uses as much as digits as its factorization.

34239839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 41.

The square root of 34239839 is about 5851.4817781482. The cubic root of 34239839 is about 324.7211462130.

The spelling of 34239839 in words is "thirty-four million, two hundred thirty-nine thousand, eight hundred thirty-nine".