842810489 has 4 divisors (see below), whose sum is σ = 844351824. Its totient is φ = 841269156.

The previous prime is 842810483. The next prime is 842810497. The reversal of 842810489 is 984018248.

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 842810489 - 2⁸ = 842810233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842810483) 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, 769847 + ... + 770940.

It is an arithmetic number, because the mean of its divisors is an integer number (211087956).

Almost surely, 2^842810489 is an apocalyptic number.

It is an amenable number.

842810489 is a deficient number, since it is larger than the sum of its proper divisors (1541335).

842810489 is a wasteful number, since it uses less digits than its factorization.

842810489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541334.

The product of its (nonzero) digits is 147456, while the sum is 44.

The square root of 842810489 is about 29031.1985457025. The cubic root of 842810489 is about 944.5899283667.

The spelling of 842810489 in words is "eight hundred forty-two million, eight hundred ten thousand, four hundred eighty-nine".