445047269 has 2 divisors, whose sum is σ = 445047270. Its totient is φ = 445047268.

The previous prime is 445047257. The next prime is 445047271. The reversal of 445047269 is 962740544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334524100 + 110523169 = 18290^2 + 10513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445047269 is a prime.

It is a super-2 number, since 2×445047269² = 396134143288716722, which contains 22 as substring.

Together with 445047271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445047209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222523634 + 222523635.

It is an arithmetic number, because the mean of its divisors is an integer number (222523635).

Almost surely, 2^445047269 is an apocalyptic number.

It is an amenable number.

445047269 is a deficient number, since it is larger than the sum of its proper divisors (1).

445047269 is an equidigital number, since it uses as much as digits as its factorization.

445047269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 445047269 is about 21096.1434627280. The cubic root of 445047269 is about 763.4877034187.

The spelling of 445047269 in words is "four hundred forty-five million, forty-seven thousand, two hundred sixty-nine".