84187914469 has 2 divisors, whose sum is σ = 84187914470. Its totient is φ = 84187914468.

The previous prime is 84187914467. The next prime is 84187914493. The reversal of 84187914469 is 96441978148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70577892225 + 13610022244 = 265665^2 + 116662^2 .

It is a cyclic number.

It is not a de Polignac number, because 84187914469 - 2¹ = 84187914467 is a prime.

It is a super-2 number, since 2×84187914469² (a number of 23 digits) contains 22 as substring.

Together with 84187914467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84187914467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42093957234 + 42093957235.

It is an arithmetic number, because the mean of its divisors is an integer number (42093957235).

Almost surely, 2^84187914469 is an apocalyptic number.

It is an amenable number.

84187914469 is a deficient number, since it is larger than the sum of its proper divisors (1).

84187914469 is an equidigital number, since it uses as much as digits as its factorization.

84187914469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13934592, while the sum is 61.

The spelling of 84187914469 in words is "eighty-four billion, one hundred eighty-seven million, nine hundred fourteen thousand, four hundred sixty-nine".