84348839 has 2 divisors, whose sum is σ = 84348840. Its totient is φ = 84348838.

The previous prime is 84348829. The next prime is 84348841. The reversal of 84348839 is 93884348.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84348839 is a prime.

It is a super-2 number, since 2×84348839² = 14229453281295842, which contains 22 as substring.

Together with 84348841, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84348793 and 84348802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84348829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42174419 + 42174420.

It is an arithmetic number, because the mean of its divisors is an integer number (42174420).

Almost surely, 2^84348839 is an apocalyptic number.

84348839 is a deficient number, since it is larger than the sum of its proper divisors (1).

84348839 is an equidigital number, since it uses as much as digits as its factorization.

84348839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 47.

The square root of 84348839 is about 9184.1624005676. The cubic root of 84348839 is about 438.5573255406.

The spelling of 84348839 in words is "eighty-four million, three hundred forty-eight thousand, eight hundred thirty-nine".