1142446399 has 2 divisors, whose sum is σ = 1142446400. Its totient is φ = 1142446398.

The previous prime is 1142446381. The next prime is 1142446483. The reversal of 1142446399 is 9936442411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1142446399 - 2¹³ = 1142438207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142444399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571223199 + 571223200.

It is an arithmetic number, because the mean of its divisors is an integer number (571223200).

Almost surely, 2^1142446399 is an apocalyptic number.

1142446399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142446399 is an equidigital number, since it uses as much as digits as its factorization.

1142446399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 1142446399 is about 33800.0946596308. The cubic root of 1142446399 is about 1045.3906490292.

The spelling of 1142446399 in words is "one billion, one hundred forty-two million, four hundred forty-six thousand, three hundred ninety-nine".