442062989 has 2 divisors, whose sum is σ = 442062990. Its totient is φ = 442062988.

The previous prime is 442062977. The next prime is 442063043. The reversal of 442062989 is 989260244.

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., 241274089 + 200788900 = 15533^2 + 14170^2 .

It is a cyclic number.

It is not a de Polignac number, because 442062989 - 2¹⁶ = 441997453 is a prime.

It is a super-2 number, since 2×442062989² = 390839372487228242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442062389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221031494 + 221031495.

It is an arithmetic number, because the mean of its divisors is an integer number (221031495).

Almost surely, 2^442062989 is an apocalyptic number.

It is an amenable number.

442062989 is a deficient number, since it is larger than the sum of its proper divisors (1).

442062989 is an equidigital number, since it uses as much as digits as its factorization.

442062989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 442062989 is about 21025.2940288596. The cubic root of 442062989 is about 761.7773435935. Note that the first 3 decimals are identical.

The spelling of 442062989 in words is "four hundred forty-two million, sixty-two thousand, nine hundred eighty-nine".