87319329 has 4 divisors (see below), whose sum is σ = 116425776. Its totient is φ = 58212884.

The previous prime is 87319321. The next prime is 87319357. The reversal of 87319329 is 92391378.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87319329 - 2³ = 87319321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87319321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14553219 + ... + 14553224.

It is an arithmetic number, because the mean of its divisors is an integer number (29106444).

Almost surely, 2^87319329 is an apocalyptic number.

It is an amenable number.

87319329 is a deficient number, since it is larger than the sum of its proper divisors (29106447).

87319329 is a wasteful number, since it uses less digits than its factorization.

87319329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29106446.

The product of its digits is 81648, while the sum is 42.

The square root of 87319329 is about 9344.4812055031. The cubic root of 87319329 is about 443.6462312674.

It can be divided in two parts, 873 and 19329, that added together give a palindrome (20202).

The spelling of 87319329 in words is "eighty-seven million, three hundred nineteen thousand, three hundred twenty-nine".