84486646469 has 2 divisors, whose sum is σ = 84486646470. Its totient is φ = 84486646468.

The previous prime is 84486646463. The next prime is 84486646499. The reversal of 84486646469 is 96464668448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71255895844 + 13230750625 = 266938^2 + 115025^2 .

It is a cyclic number.

It is not a de Polignac number, because 84486646469 - 2⁸ = 84486646213 is a prime.

It is a super-2 number, since 2×84486646469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84486646463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42243323234 + 42243323235.

It is an arithmetic number, because the mean of its divisors is an integer number (42243323235).

Almost surely, 2^84486646469 is an apocalyptic number.

It is an amenable number.

84486646469 is a deficient number, since it is larger than the sum of its proper divisors (1).

84486646469 is an equidigital number, since it uses as much as digits as its factorization.

84486646469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 191102976, while the sum is 65.

The spelling of 84486646469 in words is "eighty-four billion, four hundred eighty-six million, six hundred forty-six thousand, four hundred sixty-nine".