1233401999 has 2 divisors, whose sum is σ = 1233402000. Its totient is φ = 1233401998.

The previous prime is 1233401971. The next prime is 1233402019. The reversal of 1233401999 is 9991043321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1233401999 is a prime.

It is a super-2 number, since 2×1233401999² = 3042560982274392002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1233401909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616700999 + 616701000.

It is an arithmetic number, because the mean of its divisors is an integer number (616701000).

Almost surely, 2^1233401999 is an apocalyptic number.

1233401999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233401999 is an equidigital number, since it uses as much as digits as its factorization.

1233401999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 1233401999 is about 35119.8234477339. The cubic root of 1233401999 is about 1072.4281766643.

The spelling of 1233401999 in words is "one billion, two hundred thirty-three million, four hundred one thousand, nine hundred ninety-nine".