86784413 has 4 divisors (see below), whose sum is σ = 88901148. Its totient is φ = 84667680.

The previous prime is 86784409. The next prime is 86784437. The reversal of 86784413 is 31448768.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23454649 + 63329764 = 4843^2 + 7958^2 .

It is a cyclic number.

It is not a de Polignac number, because 86784413 - 2² = 86784409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 2116693 = 86784413 / (8 + 6 + 7 + 8 + 4 + 4 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86784403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058306 + ... + 1058387.

It is an arithmetic number, because the mean of its divisors is an integer number (22225287).

Almost surely, 2^86784413 is an apocalyptic number.

It is an amenable number.

86784413 is a deficient number, since it is larger than the sum of its proper divisors (2116735).

86784413 is a wasteful number, since it uses less digits than its factorization.

86784413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116734.

The product of its digits is 129024, while the sum is 41.

The square root of 86784413 is about 9315.8152085580. The cubic root of 86784413 is about 442.7384531987.

The spelling of 86784413 in words is "eighty-six million, seven hundred eighty-four thousand, four hundred thirteen".