848634209 has 4 divisors (see below), whose sum is σ = 866690304. Its totient is φ = 830578116.

The previous prime is 848634187. The next prime is 848634211. The reversal of 848634209 is 902436848.

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 848634209 - 2²⁰ = 847585633 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 848634209.

It is not an unprimeable number, because it can be changed into a prime (848631209) 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, 9027977 + ... + 9028070.

It is an arithmetic number, because the mean of its divisors is an integer number (216672576).

Almost surely, 2^848634209 is an apocalyptic number.

It is an amenable number.

848634209 is a deficient number, since it is larger than the sum of its proper divisors (18056095).

848634209 is a wasteful number, since it uses less digits than its factorization.

848634209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18056094.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 848634209 is about 29131.3269351054. The cubic root of 848634209 is about 946.7606042443.

The spelling of 848634209 in words is "eight hundred forty-eight million, six hundred thirty-four thousand, two hundred nine".