1244404464 has 80 divisors (see below), whose sum is σ = 3264270240. Its totient is φ = 408453120.

The previous prime is 1244404423. The next prime is 1244404493. The reversal of 1244404464 is 4644044421.

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 15 ways as a sum of consecutive naturals, for example, 1121542 + ... + 1122650.

It is an arithmetic number, because the mean of its divisors is an integer number (40803378).

Almost surely, 2^1244404464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1244404464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632135120).

1244404464 is an abundant number, since it is smaller than the sum of its proper divisors (2019865776).

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

1244404464 is a wasteful number, since it uses less digits than its factorization.

1244404464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 33.

The square root of 1244404464 is about 35276.1174734409. The cubic root of 1244404464 is about 1075.6075783702.

Adding to 1244404464 its reverse (4644044421), we get a palindrome (5888448885).

The spelling of 1244404464 in words is "one billion, two hundred forty-four million, four hundred four thousand, four hundred sixty-four".