440121249 has 8 divisors (see below), whose sum is σ = 652031520. Its totient is φ = 293414148.

The previous prime is 440121233. The next prime is 440121257. The reversal of 440121249 is 942121044.

It is a happy number.

440121249 is a `hidden beast` number, since 4 + 401 + 212 + 49 = 666.

It is not a de Polignac number, because 440121249 - 2⁴ = 440121233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 16300787 = 440121249 / (4 + 4 + 0 + 1 + 2 + 1 + 2 + 4 + 9).

It is not an unprimeable number, because it can be changed into a prime (440121259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8150367 + ... + 8150420.

It is an arithmetic number, because the mean of its divisors is an integer number (81503940).

Almost surely, 2^440121249 is an apocalyptic number.

It is an amenable number.

440121249 is a deficient number, since it is larger than the sum of its proper divisors (211910271).

440121249 is a wasteful number, since it uses less digits than its factorization.

440121249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16300796 (or 16300790 counting only the distinct ones).

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

The square root of 440121249 is about 20979.0669239602. The cubic root of 440121249 is about 760.6603500060.

The spelling of 440121249 in words is "four hundred forty million, one hundred twenty-one thousand, two hundred forty-nine".