440380161 has 12 divisors (see below), whose sum is σ = 685035988. Its totient is φ = 271003104.

The previous prime is 440380153. The next prime is 440380163. The reversal of 440380161 is 161083044.

It can be written as a sum of positive squares in 2 ways, for example, as 96648561 + 343731600 = 9831^2 + 18540^2 .

It is not a de Polignac number, because 440380161 - 2³ = 440380153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440380163) 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, 1881850 + ... + 1882083.

Almost surely, 2^440380161 is an apocalyptic number.

It is an amenable number.

440380161 is a deficient number, since it is larger than the sum of its proper divisors (244655827).

440380161 is a wasteful number, since it uses less digits than its factorization.

440380161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3763952 (or 3763949 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 440380161 is about 20985.2367391936. The cubic root of 440380161 is about 760.8094797337.

The spelling of 440380161 in words is "four hundred forty million, three hundred eighty thousand, one hundred sixty-one".