86985647479 has 16 divisors (see below), whose sum is σ = 93041233920. Its totient is φ = 81132606720.

The previous prime is 86985647431. The next prime is 86985647513. The reversal of 86985647479 is 97474658968.

It is not a de Polignac number, because 86985647479 - 2¹⁷ = 86985516407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86985647179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144487 + ... + 441415.

It is an arithmetic number, because the mean of its divisors is an integer number (5815077120).

Almost surely, 2^86985647479 is an apocalyptic number.

86985647479 is a deficient number, since it is larger than the sum of its proper divisors (6055586441).

86985647479 is a wasteful number, since it uses less digits than its factorization.

86985647479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297270.

The product of its digits is 731566080, while the sum is 73.

It can be divided in two parts, 869856 and 47479, that added together give a triangular number (917335 = T₁₃₅₄).

The spelling of 86985647479 in words is "eighty-six billion, nine hundred eighty-five million, six hundred forty-seven thousand, four hundred seventy-nine".