1445004441 has 40 divisors (see below), whose sum is σ = 2191216104. Its totient is φ = 948879360.

The previous prime is 1445004433. The next prime is 1445004443. The reversal of 1445004441 is 1444005441.

It can be written as a sum of positive squares in 4 ways, for example, as 62726400 + 1382278041 = 7920^2 + 37179^2 .

It is not a de Polignac number, because 1445004441 - 2³ = 1445004433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1445004443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2773261 + ... + 2773781.

Almost surely, 2^1445004441 is an apocalyptic number.

It is an amenable number.

1445004441 is a deficient number, since it is larger than the sum of its proper divisors (746211663).

1445004441 is an equidigital number, since it uses as much as digits as its factorization.

1445004441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 1445004441 is about 38013.2140314391. The cubic root of 1445004441 is about 1130.5498775199.

Adding to 1445004441 its reverse (1444005441), we get a palindrome (2889009882).

The spelling of 1445004441 in words is "one billion, four hundred forty-five million, four thousand, four hundred forty-one".