87529389 has 8 divisors (see below), whose sum is σ = 117358560. Its totient is φ = 58026576.

The previous prime is 87529373. The next prime is 87529417. The reversal of 87529389 is 98392578.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87529389 - 2⁴ = 87529373 is a prime.

It is a super-2 number, since 2×87529389² = 15322787877426642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87529339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80962 + ... + 82035.

It is an arithmetic number, because the mean of its divisors is an integer number (14669820).

Almost surely, 2^87529389 is an apocalyptic number.

It is an amenable number.

87529389 is a deficient number, since it is larger than the sum of its proper divisors (29829171).

87529389 is a wasteful number, since it uses less digits than its factorization.

87529389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163179.

The product of its digits is 1088640, while the sum is 51.

The square root of 87529389 is about 9355.7142431778. The cubic root of 87529389 is about 444.0016993280.

The spelling of 87529389 in words is "eighty-seven million, five hundred twenty-nine thousand, three hundred eighty-nine".