86039784 has 24 divisors (see below), whose sum is σ = 233024610. Its totient is φ = 28679904.

The previous prime is 86039783. The next prime is 86039797. The reversal of 86039784 is 48793068.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 78322500 + 7717284 = 8850^2 + 2778^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (86039783) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 597427 + ... + 597570.

Almost surely, 2^86039784 is an apocalyptic number.

It is an amenable number.

86039784 is an abundant number, since it is smaller than the sum of its proper divisors (146984826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86039784 is a wasteful number, since it uses less digits than its factorization.

86039784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195009 (or 1195002 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 86039784 is about 9275.7632570048. The cubic root of 86039784 is about 441.4685503921.

The spelling of 86039784 in words is "eighty-six million, thirty-nine thousand, seven hundred eighty-four".