86730439 has 4 divisors (see below), whose sum is σ = 86784256. Its totient is φ = 86676624.

The previous prime is 86730433. The next prime is 86730443. The reversal of 86730439 is 93403768.

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

It is a cyclic number.

It is not a de Polignac number, because 86730439 - 2³ = 86730431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86730431) 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, 24414 + ... + 27739.

It is an arithmetic number, because the mean of its divisors is an integer number (21696064).

Almost surely, 2^86730439 is an apocalyptic number.

86730439 is a deficient number, since it is larger than the sum of its proper divisors (53817).

86730439 is a wasteful number, since it uses less digits than its factorization.

86730439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53816.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 86730439 is about 9312.9178563971. The cubic root of 86730439 is about 442.6466497663.

The spelling of 86730439 in words is "eighty-six million, seven hundred thirty thousand, four hundred thirty-nine".