1123399 has 2 divisors, whose sum is σ = 1123400. Its totient is φ = 1123398.

The previous prime is 1123391. The next prime is 1123403. The reversal of 1123399 is 9933211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123399 - 2³ = 1123391 is a prime.

1123399 is a lucky number.

It is a plaindrome in base 10 and base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561699 + 561700.

It is an arithmetic number, because the mean of its divisors is an integer number (561700).

2^1123399 is an apocalyptic number.

1123399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123399 is an equidigital number, since it uses as much as digits as its factorization.

1123399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458, while the sum is 28.

The square root of 1123399 is about 1059.9051844387. The cubic root of 1123399 is about 103.9548312236.

The spelling of 1123399 in words is "one million, one hundred twenty-three thousand, three hundred ninety-nine".