444400159 has 12 divisors (see below), whose sum is σ = 533633088. Its totient is φ = 368625600.

The previous prime is 444400157. The next prime is 444400169. The reversal of 444400159 is 951004444.

It is not a de Polignac number, because 444400159 - 2¹ = 444400157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444400159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444400153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144762 + ... + 147799.

It is an arithmetic number, because the mean of its divisors is an integer number (44469424).

Almost surely, 2^444400159 is an apocalyptic number.

444400159 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

444400159 is a deficient number, since it is larger than the sum of its proper divisors (89232929).

444400159 is a wasteful number, since it uses less digits than its factorization.

444400159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292606 (or 292599 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 444400159 is about 21080.8007200865. The cubic root of 444400159 is about 763.1174804375.

The spelling of 444400159 in words is "four hundred forty-four million, four hundred thousand, one hundred fifty-nine".