84941862989 has 2 divisors, whose sum is σ = 84941862990. Its totient is φ = 84941862988.

The previous prime is 84941862961. The next prime is 84941863081. The reversal of 84941862989 is 98926814948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83781302500 + 1160560489 = 289450^2 + 34067^2 .

It is a cyclic number.

It is not a de Polignac number, because 84941862989 - 2¹⁶ = 84941797453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84941862949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42470931494 + 42470931495.

It is an arithmetic number, because the mean of its divisors is an integer number (42470931495).

Almost surely, 2^84941862989 is an apocalyptic number.

It is an amenable number.

84941862989 is a deficient number, since it is larger than the sum of its proper divisors (1).

84941862989 is an equidigital number, since it uses as much as digits as its factorization.

84941862989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71663616, while the sum is 68.

The spelling of 84941862989 in words is "eighty-four billion, nine hundred forty-one million, eight hundred sixty-two thousand, nine hundred eighty-nine".