1444461880 has 32 divisors (see below), whose sum is σ = 3259278000. Its totient is φ = 576142336.

The previous prime is 1444461859. The next prime is 1444461881. The reversal of 1444461880 is 881644441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444461881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37030 + ... + 65269.

Almost surely, 2^1444461880 is an apocalyptic number.

1444461880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444461880 is an abundant number, since it is smaller than the sum of its proper divisors (1814816120).

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

1444461880 is a wasteful number, since it uses less digits than its factorization.

1444461880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102663 (or 102659 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 1444461880 is about 38006.0768825197. The cubic root of 1444461880 is about 1130.4083626009.

The spelling of 1444461880 in words is "one billion, four hundred forty-four million, four hundred sixty-one thousand, eight hundred eighty".