442920011 has 2 divisors, whose sum is σ = 442920012. Its totient is φ = 442920010.

The previous prime is 442919999. The next prime is 442920013. The reversal of 442920011 is 110029244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442920011 - 2¹⁴ = 442903627 is a prime.

It is a super-4 number, since 4×442920011⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

Together with 442920013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (442920013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221460005 + 221460006.

It is an arithmetic number, because the mean of its divisors is an integer number (221460006).

Almost surely, 2^442920011 is an apocalyptic number.

442920011 is a deficient number, since it is larger than the sum of its proper divisors (1).

442920011 is an equidigital number, since it uses as much as digits as its factorization.

442920011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 442920011 is about 21045.6648980259. The cubic root of 442920011 is about 762.2693085514.

Adding to 442920011 its reverse (110029244), we get a palindrome (552949255).

The spelling of 442920011 in words is "four hundred forty-two million, nine hundred twenty thousand, eleven".