8123880489 has 4 divisors (see below), whose sum is σ = 10831840656. Its totient is φ = 5415920324.

The previous prime is 8123880481. The next prime is 8123880503. The reversal of 8123880489 is 9840883218.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8123880489 - 2³ = 8123880481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8123880481) 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, 1353980079 + ... + 1353980084.

It is an arithmetic number, because the mean of its divisors is an integer number (2707960164).

Almost surely, 2^8123880489 is an apocalyptic number.

It is an amenable number.

8123880489 is a deficient number, since it is larger than the sum of its proper divisors (2707960167).

8123880489 is a wasteful number, since it uses less digits than its factorization.

8123880489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707960166.

The product of its (nonzero) digits is 884736, while the sum is 51.

The square root of 8123880489 is about 90132.5717429609. The cubic root of 8123880489 is about 2010.2705417875.

The spelling of 8123880489 in words is "eight billion, one hundred twenty-three million, eight hundred eighty thousand, four hundred eighty-nine".