445243399 has 2 divisors, whose sum is σ = 445243400. Its totient is φ = 445243398.

The previous prime is 445243373. The next prime is 445243411. The reversal of 445243399 is 993342544.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445243399 - 2⁵ = 445243367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445243319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222621699 + 222621700.

It is an arithmetic number, because the mean of its divisors is an integer number (222621700).

Almost surely, 2^445243399 is an apocalyptic number.

445243399 is a deficient number, since it is larger than the sum of its proper divisors (1).

445243399 is an equidigital number, since it uses as much as digits as its factorization.

445243399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 43.

The square root of 445243399 is about 21100.7914306549. The cubic root of 445243399 is about 763.5998419578.

The spelling of 445243399 in words is "four hundred forty-five million, two hundred forty-three thousand, three hundred ninety-nine".