87091199 has 8 divisors (see below), whose sum is σ = 93863952. Its totient is φ = 80328960.

The previous prime is 87091181. The next prime is 87091201. The reversal of 87091199 is 99119078.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87091199 - 2¹² = 87087103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87091129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27119 + ... + 30159.

It is an arithmetic number, because the mean of its divisors is an integer number (11732994).

Almost surely, 2^87091199 is an apocalyptic number.

87091199 is a deficient number, since it is larger than the sum of its proper divisors (6772753).

87091199 is a wasteful number, since it uses less digits than its factorization.

87091199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257.

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 87091199 is about 9332.2665521298. The cubic root of 87091199 is about 443.2595384109.

The spelling of 87091199 in words is "eighty-seven million, ninety-one thousand, one hundred ninety-nine".