87380489 has 16 divisors (see below), whose sum is σ = 101743488. Its totient is φ = 73498752.

The previous prime is 87380441. The next prime is 87380497. The reversal of 87380489 is 98408378.

It is a cyclic number.

It is not a de Polignac number, because 87380489 - 2²⁰ = 86331913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87380089) 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 15 ways as a sum of consecutive naturals, for example, 156599 + ... + 157155.

It is an arithmetic number, because the mean of its divisors is an integer number (6358968).

Almost surely, 2^87380489 is an apocalyptic number.

It is an amenable number.

87380489 is a deficient number, since it is larger than the sum of its proper divisors (14362999).

87380489 is a wasteful number, since it uses less digits than its factorization.

87380489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 87380489 is about 9347.7531524961. The cubic root of 87380489 is about 443.7497863121.

The spelling of 87380489 in words is "eighty-seven million, three hundred eighty thousand, four hundred eighty-nine".