1228997 has 12 divisors (see below), whose sum is σ = 1544928. Its totient is φ = 957000.

The previous prime is 1228993. The next prime is 1229021. The reversal of 1228997 is 7998221.

It is not a de Polignac number, because 1228997 - 2² = 1228993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1228997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122 + ... + 1572.

It is an arithmetic number, because the mean of its divisors is an integer number (128744).

2^1228997 is an apocalyptic number.

It is an amenable number.

1228997 is a deficient number, since it is larger than the sum of its proper divisors (315931).

1228997 is a wasteful number, since it uses less digits than its factorization.

1228997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480 (or 1469 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 1228997 is about 1108.6013710978. The cubic root of 1228997 is about 107.1149955915.

It can be divided in two parts, 122 and 8997, that added together give a palindrome (9119).

The spelling of 1228997 in words is "one million, two hundred twenty-eight thousand, nine hundred ninety-seven".