444155141 has 24 divisors (see below), whose sum is σ = 492071880. Its totient is φ = 400453632.

The previous prime is 444155137. The next prime is 444155149. The reversal of 444155141 is 141551444.

It can be written as a sum of positive squares in 12 ways, for example, as 168100 + 443987041 = 410^2 + 21071^2 .

It is not a de Polignac number, because 444155141 - 2² = 444155137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444155149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 780305 + ... + 780873.

It is an arithmetic number, because the mean of its divisors is an integer number (20502995).

Almost surely, 2^444155141 is an apocalyptic number.

It is an amenable number.

444155141 is a deficient number, since it is larger than the sum of its proper divisors (47916739).

444155141 is a wasteful number, since it uses less digits than its factorization.

444155141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 696 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

The square root of 444155141 is about 21074.9885171973. The cubic root of 444155141 is about 762.9772075410.

The spelling of 444155141 in words is "four hundred forty-four million, one hundred fifty-five thousand, one hundred forty-one".