87416191 has 4 divisors (see below), whose sum is σ = 87697584. Its totient is φ = 87134800.

The previous prime is 87416183. The next prime is 87416221. The reversal of 87416191 is 19161478.

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 87416191 - 2³ = 87416183 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 87416191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87413191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140230 + ... + 140851.

It is an arithmetic number, because the mean of its divisors is an integer number (21924396).

Almost surely, 2^87416191 is an apocalyptic number.

87416191 is a deficient number, since it is larger than the sum of its proper divisors (281393).

87416191 is a wasteful number, since it uses less digits than its factorization.

87416191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281392.

The product of its digits is 12096, while the sum is 37.

The square root of 87416191 is about 9349.6626142337. The cubic root of 87416191 is about 443.8102139807.

The spelling of 87416191 in words is "eighty-seven million, four hundred sixteen thousand, one hundred ninety-one".