445989469 has 2 divisors, whose sum is σ = 445989470. Its totient is φ = 445989468.

The previous prime is 445989457. The next prime is 445989491. The reversal of 445989469 is 964989544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331713369 + 114276100 = 18213^2 + 10690^2 .

It is a cyclic number.

It is not a de Polignac number, because 445989469 - 2¹⁷ = 445858397 is a prime.

It is a super-2 number, since 2×445989469² = 397813212917803922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445989409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222994734 + 222994735.

It is an arithmetic number, because the mean of its divisors is an integer number (222994735).

Almost surely, 2^445989469 is an apocalyptic number.

It is an amenable number.

445989469 is a deficient number, since it is larger than the sum of its proper divisors (1).

445989469 is an equidigital number, since it uses as much as digits as its factorization.

445989469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 58.

The square root of 445989469 is about 21118.4627518198. The cubic root of 445989469 is about 764.0261114446.

The spelling of 445989469 in words is "four hundred forty-five million, nine hundred eighty-nine thousand, four hundred sixty-nine".