8489487261 has 8 divisors (see below), whose sum is σ = 11915069920. Its totient is φ = 5361781392.

The previous prime is 8489487247. The next prime is 8489487269. The reversal of 8489487261 is 1627849848.

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

It is not a de Polignac number, because 8489487261 - 2⁹ = 8489486749 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 148938373 = 8489487261 / (8 + 4 + 8 + 9 + 4 + 8 + 7 + 2 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8489487269) 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, 74469130 + ... + 74469243.

It is an arithmetic number, because the mean of its divisors is an integer number (1489383740).

Almost surely, 2^8489487261 is an apocalyptic number.

It is an amenable number.

8489487261 is a deficient number, since it is larger than the sum of its proper divisors (3425582659).

8489487261 is a wasteful number, since it uses less digits than its factorization.

8489487261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148938395.

The product of its digits is 6193152, while the sum is 57.

The square root of 8489487261 is about 92138.4136014941. The cubic root of 8489487261 is about 2039.9858435677.

The spelling of 8489487261 in words is "eight billion, four hundred eighty-nine million, four hundred eighty-seven thousand, two hundred sixty-one".