84679129 has 2 divisors, whose sum is σ = 84679130. Its totient is φ = 84679128.

The previous prime is 84679109. The next prime is 84679151. The reversal of 84679129 is 92197648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61591104 + 23088025 = 7848^2 + 4805^2 .

It is a cyclic number.

It is not a de Polignac number, because 84679129 - 2¹¹ = 84677081 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84679109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42339564 + 42339565.

It is an arithmetic number, because the mean of its divisors is an integer number (42339565).

Almost surely, 2^84679129 is an apocalyptic number.

It is an amenable number.

84679129 is a deficient number, since it is larger than the sum of its proper divisors (1).

84679129 is an equidigital number, since it uses as much as digits as its factorization.

84679129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 84679129 is about 9202.1263303652. The cubic root of 84679129 is about 439.1290087375.

The spelling of 84679129 in words is "eighty-four million, six hundred seventy-nine thousand, one hundred twenty-nine".