87347289 has 8 divisors (see below), whose sum is σ = 116538400. Its totient is φ = 58193856.

The previous prime is 87347287. The next prime is 87347311. The reversal of 87347289 is 98274378.

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

It is not a de Polignac number, because 87347289 - 2¹ = 87347287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87347287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3472 + ... + 13665.

It is an arithmetic number, because the mean of its divisors is an integer number (14567300).

Almost surely, 2^87347289 is an apocalyptic number.

It is an amenable number.

87347289 is a deficient number, since it is larger than the sum of its proper divisors (29191111).

87347289 is a wasteful number, since it uses less digits than its factorization.

87347289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18839.

The product of its digits is 677376, while the sum is 48.

The square root of 87347289 is about 9345.9771559746. The cubic root of 87347289 is about 443.6935786494.

The spelling of 87347289 in words is "eighty-seven million, three hundred forty-seven thousand, two hundred eighty-nine".