87539329 has 2 divisors, whose sum is σ = 87539330. Its totient is φ = 87539328.

The previous prime is 87539323. The next prime is 87539339. The reversal of 87539329 is 92393578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73273600 + 14265729 = 8560^2 + 3777^2 .

It is a cyclic number.

It is not a de Polignac number, because 87539329 - 2⁵ = 87539297 is a prime.

It is not a weakly prime, because it can be changed into another prime (87539323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43769664 + 43769665.

It is an arithmetic number, because the mean of its divisors is an integer number (43769665).

Almost surely, 2^87539329 is an apocalyptic number.

It is an amenable number.

87539329 is a deficient number, since it is larger than the sum of its proper divisors (1).

87539329 is an equidigital number, since it uses as much as digits as its factorization.

87539329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 87539329 is about 9356.2454542407. The cubic root of 87539329 is about 444.0185059110.

It can be divided in two parts, 875 and 39329, that added together give a palindrome (40204).

The spelling of 87539329 in words is "eighty-seven million, five hundred thirty-nine thousand, three hundred twenty-nine".