86940387549 has 24 divisors (see below), whose sum is σ = 134000904960. Its totient is φ = 54157522752.

The previous prime is 86940387533. The next prime is 86940387559. The reversal of 86940387549 is 94578304968.

86940387549 is a `hidden beast` number, since 8 + 6 + 9 + 4 + 0 + 3 + 87 + 549 = 666.

It is not a de Polignac number, because 86940387549 - 2⁴ = 86940387533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86940387529) 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 23 ways as a sum of consecutive naturals, for example, 3469869 + ... + 3494834.

It is an arithmetic number, because the mean of its divisors is an integer number (5583371040).

Almost surely, 2^86940387549 is an apocalyptic number.

It is an amenable number.

86940387549 is a deficient number, since it is larger than the sum of its proper divisors (47060517411).

86940387549 is a wasteful number, since it uses less digits than its factorization.

86940387549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6964801 (or 6964798 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 86940387549 in words is "eighty-six billion, nine hundred forty million, three hundred eighty-seven thousand, five hundred forty-nine".