1443444740 has 48 divisors (see below), whose sum is σ = 3119401152. Its totient is φ = 560647296.

The previous prime is 1443444727. The next prime is 1443444797. The reversal of 1443444740 is 474443441.

It is a self number, because there is not a number n which added to its sum of digits gives 1443444740.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432719 + ... + 436041.

It is an arithmetic number, because the mean of its divisors is an integer number (64987524).

Almost surely, 2^1443444740 is an apocalyptic number.

1443444740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1443444740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559700576).

1443444740 is an abundant number, since it is smaller than the sum of its proper divisors (1675956412).

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

1443444740 is a wasteful number, since it uses less digits than its factorization.

1443444740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956 (or 3954 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 35.

The square root of 1443444740 is about 37992.6932448859. The cubic root of 1443444740 is about 1130.1429688321.

The spelling of 1443444740 in words is "one billion, four hundred forty-three million, four hundred forty-four thousand, seven hundred forty".