1444389623 has 2 divisors, whose sum is σ = 1444389624. Its totient is φ = 1444389622.

The previous prime is 1444389599. The next prime is 1444389641. The reversal of 1444389623 is 3269834441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1444389623 - 2¹⁴ = 1444373239 is a prime.

It is a super-2 number, since 2×1444389623² = 4172522766060164258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444389643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722194811 + 722194812.

It is an arithmetic number, because the mean of its divisors is an integer number (722194812).

Almost surely, 2^1444389623 is an apocalyptic number.

1444389623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444389623 is an equidigital number, since it uses as much as digits as its factorization.

1444389623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 44.

The square root of 1444389623 is about 38005.1262726491. The cubic root of 1444389623 is about 1130.3895133025.

The spelling of 1444389623 in words is "one billion, four hundred forty-four million, three hundred eighty-nine thousand, six hundred twenty-three".