87280279 has 4 divisors (see below), whose sum is σ = 87328800. Its totient is φ = 87231760.

The previous prime is 87280247. The next prime is 87280321. The reversal of 87280279 is 97208278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87280279 - 2⁵ = 87280247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87280079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21454 + ... + 25195.

It is an arithmetic number, because the mean of its divisors is an integer number (21832200).

Almost surely, 2^87280279 is an apocalyptic number.

87280279 is a deficient number, since it is larger than the sum of its proper divisors (48521).

87280279 is a wasteful number, since it uses less digits than its factorization.

87280279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48520.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 87280279 is about 9342.3915032501. The cubic root of 87280279 is about 443.5800871933.

The spelling of 87280279 in words is "eighty-seven million, two hundred eighty thousand, two hundred seventy-nine".