1227089 has 6 divisors (see below), whose sum is σ = 1264326. Its totient is φ = 1190240.

The previous prime is 1227053. The next prime is 1227101. The reversal of 1227089 is 9807221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 380689 + 846400 = 617^2 + 920^2 .

It is not a de Polignac number, because 1227089 - 2¹² = 1222993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7007 + ... + 7179.

It is an arithmetic number, because the mean of its divisors is an integer number (210721).

2^1227089 is an apocalyptic number.

It is an amenable number.

1227089 is a deficient number, since it is larger than the sum of its proper divisors (37237).

1227089 is an frugal number, since it uses more digits than its factorization.

1227089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1227089 is about 1107.7404930759. The cubic root of 1227089 is about 107.0595353893.

The spelling of 1227089 in words is "one million, two hundred twenty-seven thousand, eighty-nine".