87438489 has 8 divisors (see below), whose sum is σ = 117000672. Its totient is φ = 58084320.

The previous prime is 87438487. The next prime is 87438493. The reversal of 87438489 is 98483478.

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

It is not a de Polignac number, because 87438489 - 2¹ = 87438487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87438487) 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 7 ways as a sum of consecutive naturals, for example, 51019 + ... + 52704.

It is an arithmetic number, because the mean of its divisors is an integer number (14625084).

Almost surely, 2^87438489 is an apocalyptic number.

It is an amenable number.

87438489 is a deficient number, since it is larger than the sum of its proper divisors (29562183).

87438489 is a wasteful number, since it uses less digits than its factorization.

87438489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104007.

The product of its digits is 1548288, while the sum is 51.

The square root of 87438489 is about 9350.8549876469. The cubic root of 87438489 is about 443.8479462693.

The spelling of 87438489 in words is "eighty-seven million, four hundred thirty-eight thousand, four hundred eighty-nine".