445442047 has 2 divisors, whose sum is σ = 445442048. Its totient is φ = 445442046.

The previous prime is 445442029. The next prime is 445442071. The reversal of 445442047 is 740244544.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445442047 - 2²³ = 437053439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445442147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222721023 + 222721024.

It is an arithmetic number, because the mean of its divisors is an integer number (222721024).

Almost surely, 2^445442047 is an apocalyptic number.

445442047 is a deficient number, since it is larger than the sum of its proper divisors (1).

445442047 is an equidigital number, since it uses as much as digits as its factorization.

445442047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71680, while the sum is 34.

The square root of 445442047 is about 21105.4980277652. The cubic root of 445442047 is about 763.7133866157.

The spelling of 445442047 in words is "four hundred forty-five million, four hundred forty-two thousand, forty-seven".