1443242399 has 2 divisors, whose sum is σ = 1443242400. Its totient is φ = 1443242398.

The previous prime is 1443242363. The next prime is 1443242401. The reversal of 1443242399 is 9932423441.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1443242399 is a prime.

Together with 1443242401, 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 (1443292399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721621199 + 721621200.

It is an arithmetic number, because the mean of its divisors is an integer number (721621200).

Almost surely, 2^1443242399 is an apocalyptic number.

1443242399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1443242399 is an equidigital number, since it uses as much as digits as its factorization.

1443242399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 41.

The square root of 1443242399 is about 37990.0302579506. The cubic root of 1443242399 is about 1130.0901588334.

The spelling of 1443242399 in words is "one billion, four hundred forty-three million, two hundred forty-two thousand, three hundred ninety-nine".