1228249 has 4 divisors (see below), whose sum is σ = 1339920. Its totient is φ = 1116580.

The previous prime is 1228247. The next prime is 1228273. The reversal of 1228249 is 9428221.

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 1228249 - 2¹ = 1228247 is a prime.

It is an Ulam number.

It is a Duffinian number.

1228249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1228243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55819 + ... + 55840.

It is an arithmetic number, because the mean of its divisors is an integer number (334980).

2^1228249 is an apocalyptic number.

It is an amenable number.

1228249 is a deficient number, since it is larger than the sum of its proper divisors (111671).

1228249 is a wasteful number, since it uses less digits than its factorization.

1228249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111670.

The product of its digits is 2304, while the sum is 28.

The square root of 1228249 is about 1108.2639577285. The cubic root of 1228249 is about 107.0932601771.

Subtracting from 1228249 its sum of digits (28), we obtain a palindrome (1228221).

The spelling of 1228249 in words is "one million, two hundred twenty-eight thousand, two hundred forty-nine".