84869677 has 2 divisors, whose sum is σ = 84869678. Its totient is φ = 84869676.

The previous prime is 84869669. The next prime is 84869683. The reversal of 84869677 is 77696848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68459076 + 16410601 = 8274^2 + 4051^2 .

It is a cyclic number.

It is not a de Polignac number, because 84869677 - 2³ = 84869669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84869657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42434838 + 42434839.

It is an arithmetic number, because the mean of its divisors is an integer number (42434839).

Almost surely, 2^84869677 is an apocalyptic number.

It is an amenable number.

84869677 is a deficient number, since it is larger than the sum of its proper divisors (1).

84869677 is an equidigital number, since it uses as much as digits as its factorization.

84869677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 55.

The square root of 84869677 is about 9212.4739891085. The cubic root of 84869677 is about 439.4581432430.

The spelling of 84869677 in words is "eighty-four million, eight hundred sixty-nine thousand, six hundred seventy-seven".