442248479 has 2 divisors, whose sum is σ = 442248480. Its totient is φ = 442248478.

The previous prime is 442248473. The next prime is 442248487. The reversal of 442248479 is 974842244.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442248479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442248473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221124239 + 221124240.

It is an arithmetic number, because the mean of its divisors is an integer number (221124240).

Almost surely, 2^442248479 is an apocalyptic number.

442248479 is a deficient number, since it is larger than the sum of its proper divisors (1).

442248479 is an equidigital number, since it uses as much as digits as its factorization.

442248479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 44.

The square root of 442248479 is about 21029.7046817115. The cubic root of 442248479 is about 761.8838761648.

The spelling of 442248479 in words is "four hundred forty-two million, two hundred forty-eight thousand, four hundred seventy-nine".