442545487 has 2 divisors, whose sum is σ = 442545488. Its totient is φ = 442545486.

The previous prime is 442545463. The next prime is 442545533. The reversal of 442545487 is 784545244.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442545487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442545407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221272743 + 221272744.

It is an arithmetic number, because the mean of its divisors is an integer number (221272744).

Almost surely, 2^442545487 is an apocalyptic number.

442545487 is a deficient number, since it is larger than the sum of its proper divisors (1).

442545487 is an equidigital number, since it uses as much as digits as its factorization.

442545487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 716800, while the sum is 43.

The square root of 442545487 is about 21036.7651267965. The cubic root of 442545487 is about 762.0543949109.

The spelling of 442545487 in words is "four hundred forty-two million, five hundred forty-five thousand, four hundred eighty-seven".