8087491 has 4 divisors (see below), whose sum is σ = 8366400. Its totient is φ = 7808584.

The previous prime is 8087489. The next prime is 8087507. The reversal of 8087491 is 1947808.

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 8087491 - 2¹ = 8087489 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 8087491.

It is not an unprimeable number, because it can be changed into a prime (8087591) 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, 139411 + ... + 139468.

It is an arithmetic number, because the mean of its divisors is an integer number (2091600).

Almost surely, 2^8087491 is an apocalyptic number.

8087491 is a deficient number, since it is larger than the sum of its proper divisors (278909).

8087491 is a wasteful number, since it uses less digits than its factorization.

8087491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278908.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 8087491 is about 2843.8514377513. The cubic root of 8087491 is about 200.7264498252.

It can be divided in two parts, 80 and 87491, that added together give a triangular number (87571 = T₄₁₈).

The spelling of 8087491 in words is "eight million, eighty-seven thousand, four hundred ninety-one".