86469519249 has 21 divisors (see below), whose sum is σ = 129656876889. Its totient is φ = 57641053140.

The previous prime is 86469519217. The next prime is 86469519281. The reversal of 86469519249 is 94291596468.

The square root of 86469519249 is 294057.

It is a perfect power (a square), and thus also a powerful number.

86469519249 is a `hidden beast` number, since 86 + 469 + 5 + 1 + 92 + 4 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (86469519217) and next prime (86469519281).

It is not a de Polignac number, because 86469519249 - 2⁵ = 86469519217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86469519349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 7934094 + ... + 7944984.

Almost surely, 2^86469519249 is an apocalyptic number.

86469519249 is the 294057-th square number.

86469519249 is the 147029-th centered octagonal number.

It is an amenable number.

86469519249 is a deficient number, since it is larger than the sum of its proper divisors (43187357640).

86469519249 is an frugal number, since it uses more digits than its factorization.

86469519249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21800 (or 10894 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The spelling of 86469519249 in words is "eighty-six billion, four hundred sixty-nine million, five hundred nineteen thousand, two hundred forty-nine".