1444535669 has 4 divisors (see below), whose sum is σ = 1448698944. Its totient is φ = 1440372396.

The previous prime is 1444535623. The next prime is 1444535671. The reversal of 1444535669 is 9665354441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1444535669 - 2¹² = 1444531573 is a prime.

It is a super-2 number, since 2×1444535669² = 4173366598026555122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444535069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2081117 + ... + 2081810.

It is an arithmetic number, because the mean of its divisors is an integer number (362174736).

Almost surely, 2^1444535669 is an apocalyptic number.

It is an amenable number.

1444535669 is a deficient number, since it is larger than the sum of its proper divisors (4163275).

1444535669 is an equidigital number, since it uses as much as digits as its factorization.

1444535669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163274.

The product of its digits is 1555200, while the sum is 47.

The square root of 1444535669 is about 38007.0476227765. The cubic root of 1444535669 is about 1130.4276108953.

The spelling of 1444535669 in words is "one billion, four hundred forty-four million, five hundred thirty-five thousand, six hundred sixty-nine".