1444727693 has 4 divisors (see below), whose sum is σ = 1445454588. Its totient is φ = 1444000800.

The previous prime is 1444727663. The next prime is 1444727723. The reversal of 1444727693 is 3967274441.

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 (1444727663) and next prime (1444727723).

It can be written as a sum of positive squares in 2 ways, for example, as 1293265444 + 151462249 = 35962^2 + 12307^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444727693 - 2¹⁸ = 1444465549 is a prime.

It is a super-2 number, since 2×1444727693² = 4174476213842204498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444727663) 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, 360458 + ... + 364443.

It is an arithmetic number, because the mean of its divisors is an integer number (361363647).

Almost surely, 2^1444727693 is an apocalyptic number.

It is an amenable number.

1444727693 is a deficient number, since it is larger than the sum of its proper divisors (726895).

1444727693 is an equidigital number, since it uses as much as digits as its factorization.

1444727693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726894.

The product of its digits is 1016064, while the sum is 47.

The square root of 1444727693 is about 38009.5737018978. The cubic root of 1444727693 is about 1130.4776984121.

The spelling of 1444727693 in words is "one billion, four hundred forty-four million, seven hundred twenty-seven thousand, six hundred ninety-three".