1244471436 has 36 divisors (see below), whose sum is σ = 3387729072. Its totient is φ = 382914144.

The previous prime is 1244471413. The next prime is 1244471477. The reversal of 1244471436 is 6341744421.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1244471436.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1329096 + ... + 1330031.

Almost surely, 2^1244471436 is an apocalyptic number.

It is an amenable number.

1244471436 is an abundant number, since it is smaller than the sum of its proper divisors (2143257636).

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

1244471436 is a wasteful number, since it uses less digits than its factorization.

1244471436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659150 (or 2659145 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 1244471436 is about 35277.0667147936. The cubic root of 1244471436 is about 1075.6268738915.

The spelling of 1244471436 in words is "one billion, two hundred forty-four million, four hundred seventy-one thousand, four hundred thirty-six".