84364279 has 2 divisors, whose sum is σ = 84364280. Its totient is φ = 84364278.

The previous prime is 84364249. The next prime is 84364289. The reversal of 84364279 is 97246348.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84364279 - 2⁹ = 84363767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84364249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42182139 + 42182140.

It is an arithmetic number, because the mean of its divisors is an integer number (42182140).

Almost surely, 2^84364279 is an apocalyptic number.

84364279 is a deficient number, since it is larger than the sum of its proper divisors (1).

84364279 is an equidigital number, since it uses as much as digits as its factorization.

84364279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 84364279 is about 9185.0029395749. The cubic root of 84364279 is about 438.5840831189.

The spelling of 84364279 in words is "eighty-four million, three hundred sixty-four thousand, two hundred seventy-nine".