87004199 has 4 divisors (see below), whose sum is σ = 87384360. Its totient is φ = 86624040.

The previous prime is 87004189. The next prime is 87004213. The reversal of 87004199 is 99140078.

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-87004199 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 (87004109) 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, 189737 + ... + 190194.

It is an arithmetic number, because the mean of its divisors is an integer number (21846090).

Almost surely, 2^87004199 is an apocalyptic number.

87004199 is a deficient number, since it is larger than the sum of its proper divisors (380161).

87004199 is a wasteful number, since it uses less digits than its factorization.

87004199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380160.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 87004199 is about 9327.6041403996. The cubic root of 87004199 is about 443.1118907784. Note that the first 3 decimals are identical.

The spelling of 87004199 in words is "eighty-seven million, four thousand, one hundred ninety-nine".