440647449 has 16 divisors (see below), whose sum is σ = 674676480. Its totient is φ = 253002960.

The previous prime is 440647447. The next prime is 440647457. The reversal of 440647449 is 944746044.

It is not a de Polignac number, because 440647449 - 2¹ = 440647447 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 440647449.

It is not an unprimeable number, because it can be changed into a prime (440647447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350767 + ... + 352020.

It is an arithmetic number, because the mean of its divisors is an integer number (42167280).

Almost surely, 2^440647449 is an apocalyptic number.

It is an amenable number.

440647449 is a deficient number, since it is larger than the sum of its proper divisors (234029031).

440647449 is a wasteful number, since it uses less digits than its factorization.

440647449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702820.

The product of its (nonzero) digits is 387072, while the sum is 42.

The square root of 440647449 is about 20991.6042502711. The cubic root of 440647449 is about 760.9633726154.

The spelling of 440647449 in words is "four hundred forty million, six hundred forty-seven thousand, four hundred forty-nine".