87893279 has 4 divisors (see below), whose sum is σ = 88031040. Its totient is φ = 87755520.

The previous prime is 87893257. The next prime is 87893353. The reversal of 87893279 is 97239878.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97239878 = 2 ⋅48619939.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87893279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87893279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87893209) 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, 67919 + ... + 69200.

It is an arithmetic number, because the mean of its divisors is an integer number (22007760).

Almost surely, 2^87893279 is an apocalyptic number.

87893279 is a deficient number, since it is larger than the sum of its proper divisors (137761).

87893279 is a wasteful number, since it uses less digits than its factorization.

87893279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137760.

The product of its digits is 1524096, while the sum is 53.

The square root of 87893279 is about 9375.1415455981. The cubic root of 87893279 is about 444.6161382730.

The spelling of 87893279 in words is "eighty-seven million, eight hundred ninety-three thousand, two hundred seventy-nine".