445989433 has 2 divisors, whose sum is σ = 445989434. Its totient is φ = 445989432.

The previous prime is 445989409. The next prime is 445989443. The reversal of 445989433 is 334989544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376049664 + 69939769 = 19392^2 + 8363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445989433 is a prime.

It is a super-2 number, since 2×445989433² = 397813148695322978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (445989443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222994716 + 222994717.

It is an arithmetic number, because the mean of its divisors is an integer number (222994717).

Almost surely, 2^445989433 is an apocalyptic number.

It is an amenable number.

445989433 is a deficient number, since it is larger than the sum of its proper divisors (1).

445989433 is an equidigital number, since it uses as much as digits as its factorization.

445989433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 49.

The square root of 445989433 is about 21118.4618994850. The cubic root of 445989433 is about 764.0260908873.

The spelling of 445989433 in words is "four hundred forty-five million, nine hundred eighty-nine thousand, four hundred thirty-three".