128848849 has 4 divisors (see below), whose sum is σ = 129832560. Its totient is φ = 127865140.

The previous prime is 128848817. The next prime is 128848873. The reversal of 128848849 is 948848821.

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, and also an emirpimes, since its reverse is a distinct semiprime: 948848821 = 353 ⋅2687957.

It is a cyclic number.

It is not a de Polignac number, because 128848849 - 2⁵ = 128848817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128848796 and 128848805.

It is not an unprimeable number, because it can be changed into a prime (128848879) 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, 491659 + ... + 491920.

It is an arithmetic number, because the mean of its divisors is an integer number (32458140).

Almost surely, 2^128848849 is an apocalyptic number.

It is an amenable number.

128848849 is a deficient number, since it is larger than the sum of its proper divisors (983711).

128848849 is an equidigital number, since it uses as much as digits as its factorization.

128848849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983710.

The product of its digits is 1179648, while the sum is 52.

The square root of 128848849 is about 11351.1606895507. The cubic root of 128848849 is about 505.0800108497.

The spelling of 128848849 in words is "one hundred twenty-eight million, eight hundred forty-eight thousand, eight hundred forty-nine".