1444163477 has 4 divisors (see below), whose sum is σ = 1444600620. Its totient is φ = 1443726336.

The previous prime is 1444163467. The next prime is 1444163503. The reversal of 1444163477 is 7743614441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 804629956 + 639533521 = 28366^2 + 25289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444163477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444163437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213578 + ... + 220235.

It is an arithmetic number, because the mean of its divisors is an integer number (361150155).

Almost surely, 2^1444163477 is an apocalyptic number.

It is an amenable number.

1444163477 is a deficient number, since it is larger than the sum of its proper divisors (437143).

1444163477 is an equidigital number, since it uses as much as digits as its factorization.

1444163477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437142.

The product of its digits is 225792, while the sum is 41.

The square root of 1444163477 is about 38002.1509522816. The cubic root of 1444163477 is about 1130.3305157381.

The spelling of 1444163477 in words is "one billion, four hundred forty-four million, one hundred sixty-three thousand, four hundred seventy-seven".