442919999 has 2 divisors, whose sum is σ = 442920000. Its totient is φ = 442919998.

The previous prime is 442919951. The next prime is 442920011. The reversal of 442919999 is 999919244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442919999 - 2¹² = 442915903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442919299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221459999 + 221460000.

It is an arithmetic number, because the mean of its divisors is an integer number (221460000).

Almost surely, 2^442919999 is an apocalyptic number.

442919999 is a deficient number, since it is larger than the sum of its proper divisors (1).

442919999 is an equidigital number, since it uses as much as digits as its factorization.

442919999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1889568, while the sum is 56.

The square root of 442919999 is about 21045.6646129316. The cubic root of 442919999 is about 762.2693016673.

The spelling of 442919999 in words is "four hundred forty-two million, nine hundred nineteen thousand, nine hundred ninety-nine".