1230869 has 2 divisors, whose sum is σ = 1230870. Its totient is φ = 1230868.

The previous prime is 1230863. The next prime is 1230871. The reversal of 1230869 is 9680321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 722500 + 508369 = 850^2 + 713^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230869 is a prime.

It is a super-2 number, since 2×1230869² = 3030076990322, which contains 22 as substring.

Together with 1230871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615434 + 615435.

It is an arithmetic number, because the mean of its divisors is an integer number (615435).

2^1230869 is an apocalyptic number.

It is an amenable number.

1230869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230869 is an equidigital number, since it uses as much as digits as its factorization.

1230869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1230869 is about 1109.4453569239. The cubic root of 1230869 is about 107.1693536162.

The spelling of 1230869 in words is "one million, two hundred thirty thousand, eight hundred sixty-nine".