444921428117 has 2 divisors, whose sum is σ = 444921428118. Its totient is φ = 444921428116.

The previous prime is 444921428089. The next prime is 444921428143. The reversal of 444921428117 is 711824129444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344758039921 + 100163388196 = 587161^2 + 316486^2 .

It is a cyclic number.

It is not a de Polignac number, because 444921428117 - 2¹⁶ = 444921362581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444921428167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222460714058 + 222460714059.

It is an arithmetic number, because the mean of its divisors is an integer number (222460714059).

Almost surely, 2^444921428117 is an apocalyptic number.

It is an amenable number.

444921428117 is a deficient number, since it is larger than the sum of its proper divisors (1).

444921428117 is an equidigital number, since it uses as much as digits as its factorization.

444921428117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 47.

The spelling of 444921428117 in words is "four hundred forty-four billion, nine hundred twenty-one million, four hundred twenty-eight thousand, one hundred seventeen".