1444142873 has 4 divisors (see below), whose sum is σ = 1446396468. Its totient is φ = 1441889280.

The previous prime is 1444142849. The next prime is 1444142897. The reversal of 1444142873 is 3782414441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1444142849) and next prime (1444142897).

It can be written as a sum of positive squares in 2 ways, for example, as 1325833744 + 118309129 = 36412^2 + 10877^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444142873 - 2²⁸ = 1175707417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1444142773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1125836 + ... + 1127117.

It is an arithmetic number, because the mean of its divisors is an integer number (361599117).

Almost surely, 2^1444142873 is an apocalyptic number.

It is an amenable number.

1444142873 is a deficient number, since it is larger than the sum of its proper divisors (2253595).

1444142873 is an equidigital number, since it uses as much as digits as its factorization.

1444142873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253594.

The product of its digits is 86016, while the sum is 38.

The square root of 1444142873 is about 38001.8798613963. The cubic root of 1444142873 is about 1130.3251402062.

The spelling of 1444142873 in words is "one billion, four hundred forty-four million, one hundred forty-two thousand, eight hundred seventy-three".