87387329 has 2 divisors, whose sum is σ = 87387330. Its totient is φ = 87387328.

The previous prime is 87387269. The next prime is 87387337. The reversal of 87387329 is 92378378.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73136704 + 14250625 = 8552^2 + 3775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87387329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87387829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43693664 + 43693665.

It is an arithmetic number, because the mean of its divisors is an integer number (43693665).

Almost surely, 2^87387329 is an apocalyptic number.

It is an amenable number.

87387329 is a deficient number, since it is larger than the sum of its proper divisors (1).

87387329 is an equidigital number, since it uses as much as digits as its factorization.

87387329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 47.

The square root of 87387329 is about 9348.1190086562. The cubic root of 87387329 is about 443.7613646762.

The spelling of 87387329 in words is "eighty-seven million, three hundred eighty-seven thousand, three hundred twenty-nine".