442241977 has 2 divisors, whose sum is σ = 442241978. Its totient is φ = 442241976.

The previous prime is 442241963. The next prime is 442242023. The reversal of 442241977 is 779142244.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391604521 + 50637456 = 19789^2 + 7116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442241977 is a prime.

It is not a weakly prime, because it can be changed into another prime (442241477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221120988 + 221120989.

It is an arithmetic number, because the mean of its divisors is an integer number (221120989).

Almost surely, 2^442241977 is an apocalyptic number.

It is an amenable number.

442241977 is a deficient number, since it is larger than the sum of its proper divisors (1).

442241977 is an equidigital number, since it uses as much as digits as its factorization.

442241977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 40.

The square root of 442241977 is about 21029.5500902896. The cubic root of 442241977 is about 761.8801423715.

The spelling of 442241977 in words is "four hundred forty-two million, two hundred forty-one thousand, nine hundred seventy-seven".