87279299 has 4 divisors (see below), whose sum is σ = 90288960. Its totient is φ = 84269640.

The previous prime is 87279277. The next prime is 87279307. The reversal of 87279299 is 99297278.

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 87279299 - 2¹² = 87275203 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 87279299.

It is not an unprimeable number, because it can be changed into a prime (87279209) 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, 1504787 + ... + 1504844.

It is an arithmetic number, because the mean of its divisors is an integer number (22572240).

Almost surely, 2^87279299 is an apocalyptic number.

87279299 is a deficient number, since it is larger than the sum of its proper divisors (3009661).

87279299 is a wasteful number, since it uses less digits than its factorization.

87279299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009660.

The product of its digits is 1143072, while the sum is 53.

The square root of 87279299 is about 9342.3390540057. The cubic root of 87279299 is about 443.5784269858.

It can be divided in two parts, 87279 and 299, that added together give a palindrome (87578).

The spelling of 87279299 in words is "eighty-seven million, two hundred seventy-nine thousand, two hundred ninety-nine".