87009279 has 8 divisors (see below), whose sum is σ = 132585600. Its totient is φ = 49719576.

The previous prime is 87009277. The next prime is 87009289. The reversal of 87009279 is 97290078.

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

It is not a de Polignac number, because 87009279 - 2¹ = 87009277 is a prime.

It is a super-2 number, since 2×87009279² = 15141229264199682, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 87009279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87009271) 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, 2071629 + ... + 2071670.

It is an arithmetic number, because the mean of its divisors is an integer number (16573200).

Almost surely, 2^87009279 is an apocalyptic number.

87009279 is a deficient number, since it is larger than the sum of its proper divisors (45576321).

87009279 is a wasteful number, since it uses less digits than its factorization.

87009279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143309.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 87009279 is about 9327.8764464373. The cubic root of 87009279 is about 443.1205147476.

The spelling of 87009279 in words is "eighty-seven million, nine thousand, two hundred seventy-nine".