84839453 has 2 divisors, whose sum is σ = 84839454. Its totient is φ = 84839452.

The previous prime is 84839411. The next prime is 84839459. The reversal of 84839453 is 35493848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51222649 + 33616804 = 7157^2 + 5798^2 .

It is a cyclic number.

It is not a de Polignac number, because 84839453 - 2²⁰ = 83790877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84839459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42419726 + 42419727.

It is an arithmetic number, because the mean of its divisors is an integer number (42419727).

Almost surely, 2^84839453 is an apocalyptic number.

It is an amenable number.

84839453 is a deficient number, since it is larger than the sum of its proper divisors (1).

84839453 is an equidigital number, since it uses as much as digits as its factorization.

84839453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 44.

The square root of 84839453 is about 9210.8334584879. The cubic root of 84839453 is about 439.4059700743.

The spelling of 84839453 in words is "eighty-four million, eight hundred thirty-nine thousand, four hundred fifty-three".