442248487 has 2 divisors, whose sum is σ = 442248488. Its totient is φ = 442248486.

The previous prime is 442248479. The next prime is 442248553. The reversal of 442248487 is 784842244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442248487 - 2³ = 442248479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442248407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221124243 + 221124244.

It is an arithmetic number, because the mean of its divisors is an integer number (221124244).

Almost surely, 2^442248487 is an apocalyptic number.

442248487 is a deficient number, since it is larger than the sum of its proper divisors (1).

442248487 is an equidigital number, since it uses as much as digits as its factorization.

442248487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 458752, while the sum is 43.

The square root of 442248487 is about 21029.7048719187. The cubic root of 442248487 is about 761.8838807588.

The spelling of 442248487 in words is "four hundred forty-two million, two hundred forty-eight thousand, four hundred eighty-seven".