84870629 has 2 divisors, whose sum is σ = 84870630. Its totient is φ = 84870628.

The previous prime is 84870623. The next prime is 84870641. The reversal of 84870629 is 92607848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65642404 + 19228225 = 8102^2 + 4385^2 .

It is a cyclic number.

It is not a de Polignac number, because 84870629 - 2¹⁶ = 84805093 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84870629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84870623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42435314 + 42435315.

It is an arithmetic number, because the mean of its divisors is an integer number (42435315).

Almost surely, 2^84870629 is an apocalyptic number.

It is an amenable number.

84870629 is a deficient number, since it is larger than the sum of its proper divisors (1).

84870629 is an equidigital number, since it uses as much as digits as its factorization.

84870629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 84870629 is about 9212.5256580375. The cubic root of 84870629 is about 439.4597863999.

The spelling of 84870629 in words is "eighty-four million, eight hundred seventy thousand, six hundred twenty-nine".