87429587 has 4 divisors (see below), whose sum is σ = 99919536. Its totient is φ = 74939640.

The previous prime is 87429571. The next prime is 87429599. The reversal of 87429587 is 78592478.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78592478 = 2 ⋅39296239.

It is a cyclic number.

It is not a de Polignac number, because 87429587 - 2⁴ = 87429571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87429547) 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 in 3 ways as a sum of consecutive naturals, for example, 6244964 + ... + 6244977.

It is an arithmetic number, because the mean of its divisors is an integer number (24979884).

Almost surely, 2^87429587 is an apocalyptic number.

87429587 is a deficient number, since it is larger than the sum of its proper divisors (12489949).

87429587 is a wasteful number, since it uses less digits than its factorization.

87429587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12489948.

The product of its digits is 1128960, while the sum is 50.

The square root of 87429587 is about 9350.3789762768. The cubic root of 87429587 is about 443.8328832288.

The spelling of 87429587 in words is "eighty-seven million, four hundred twenty-nine thousand, five hundred eighty-seven".