87448147 has 4 divisors (see below), whose sum is σ = 87467920. Its totient is φ = 87428376.

The previous prime is 87448099. The next prime is 87448157. The reversal of 87448147 is 74184478.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87448147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87448157) 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, 133 + ... + 13225.

It is an arithmetic number, because the mean of its divisors is an integer number (21866980).

Almost surely, 2^87448147 is an apocalyptic number.

87448147 is a deficient number, since it is larger than the sum of its proper divisors (19773).

87448147 is a wasteful number, since it uses less digits than its factorization.

87448147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19772.

The product of its digits is 200704, while the sum is 43.

The square root of 87448147 is about 9351.3713967525. The cubic root of 87448147 is about 443.8642873783.

The spelling of 87448147 in words is "eighty-seven million, four hundred forty-eight thousand, one hundred forty-seven".