1445212404 has 18 divisors (see below), whose sum is σ = 3653175890. Its totient is φ = 481737456.

The previous prime is 1445212369. The next prime is 1445212441. The reversal of 1445212404 is 4042125441.

1445212404 is a `hidden beast` number, since 1 + 4 + 45 + 212 + 404 = 666.

It can be written as a sum of positive squares in only one way, i.e., 884943504 + 560268900 = 29748^2 + 23670^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 20072359 + ... + 20072430.

Almost surely, 2^1445212404 is an apocalyptic number.

It is an amenable number.

1445212404 is an abundant number, since it is smaller than the sum of its proper divisors (2207963486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1445212404 is a wasteful number, since it uses less digits than its factorization.

1445212404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40144799 (or 40144794 counting only the distinct ones).

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

The square root of 1445212404 is about 38015.9493370875. The cubic root of 1445212404 is about 1130.6041106326.

Adding to 1445212404 its reverse (4042125441), we get a palindrome (5487337845).

The spelling of 1445212404 in words is "one billion, four hundred forty-five million, two hundred twelve thousand, four hundred four".