87879147 has 4 divisors (see below), whose sum is σ = 117172200. Its totient is φ = 58586096.

The previous prime is 87879133. The next prime is 87879163. The reversal of 87879147 is 74197878.

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 87879147 - 2¹⁰ = 87878123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87879147.

It is not an unprimeable number, because it can be changed into a prime (87875147) 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, 14646522 + ... + 14646527.

It is an arithmetic number, because the mean of its divisors is an integer number (29293050).

Almost surely, 2^87879147 is an apocalyptic number.

87879147 is a deficient number, since it is larger than the sum of its proper divisors (29293053).

87879147 is a wasteful number, since it uses less digits than its factorization.

87879147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29293052.

The product of its digits is 790272, while the sum is 51.

The square root of 87879147 is about 9374.3878200126. The cubic root of 87879147 is about 444.5923076604.

The spelling of 87879147 in words is "eighty-seven million, eight hundred seventy-nine thousand, one hundred forty-seven".