84672379829 has 2 divisors, whose sum is σ = 84672379830. Its totient is φ = 84672379828.

The previous prime is 84672379819. The next prime is 84672379843. The reversal of 84672379829 is 92897327648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64364704804 + 20307675025 = 253702^2 + 142505^2 .

It is a cyclic number.

It is not a de Polignac number, because 84672379829 - 2²⁰ = 84671331253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84672379819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42336189914 + 42336189915.

It is an arithmetic number, because the mean of its divisors is an integer number (42336189915).

Almost surely, 2^84672379829 is an apocalyptic number.

It is an amenable number.

84672379829 is a deficient number, since it is larger than the sum of its proper divisors (1).

84672379829 is an equidigital number, since it uses as much as digits as its factorization.

84672379829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73156608, while the sum is 65.

The spelling of 84672379829 in words is "eighty-four billion, six hundred seventy-two million, three hundred seventy-nine thousand, eight hundred twenty-nine".