1123998349 has 2 divisors, whose sum is σ = 1123998350. Its totient is φ = 1123998348.

The previous prime is 1123998329. The next prime is 1123998353. The reversal of 1123998349 is 9438993211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 579942724 + 544055625 = 24082^2 + 23325^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123998349 - 2⁹ = 1123997837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123998319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561999174 + 561999175.

It is an arithmetic number, because the mean of its divisors is an integer number (561999175).

Almost surely, 2^1123998349 is an apocalyptic number.

It is an amenable number.

1123998349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123998349 is an equidigital number, since it uses as much as digits as its factorization.

1123998349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 49.

The square root of 1123998349 is about 33526.0846058707. The cubic root of 1123998349 is about 1039.7331505326.

The spelling of 1123998349 in words is "one billion, one hundred twenty-three million, nine hundred ninety-eight thousand, three hundred forty-nine".