445644349 has 2 divisors, whose sum is σ = 445644350. Its totient is φ = 445644348.

The previous prime is 445644323. The next prime is 445644377. The reversal of 445644349 is 943446544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409860025 + 35784324 = 20245^2 + 5982^2 .

It is a cyclic number.

It is not a de Polignac number, because 445644349 - 2¹³ = 445636157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445644319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222822174 + 222822175.

It is an arithmetic number, because the mean of its divisors is an integer number (222822175).

Almost surely, 2^445644349 is an apocalyptic number.

It is an amenable number.

445644349 is a deficient number, since it is larger than the sum of its proper divisors (1).

445644349 is an equidigital number, since it uses as much as digits as its factorization.

445644349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 43.

The square root of 445644349 is about 21110.2901211708. The cubic root of 445644349 is about 763.8289851641.

The spelling of 445644349 in words is "four hundred forty-five million, six hundred forty-four thousand, three hundred forty-nine".