424444865 has 16 divisors (see below), whose sum is σ = 580780368. Its totient is φ = 294998016.

The previous prime is 424444861. The next prime is 424444897. The reversal of 424444865 is 568444424.

It can be written as a sum of positive squares in 8 ways, for example, as 81306289 + 343138576 = 9017^2 + 18524^2 .

It is a cyclic number.

It is not a de Polignac number, because 424444865 - 2² = 424444861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (424444861) 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, 190952 + ... + 193161.

It is an arithmetic number, because the mean of its divisors is an integer number (36298773).

Almost surely, 2^424444865 is an apocalyptic number.

It is an amenable number.

424444865 is a deficient number, since it is larger than the sum of its proper divisors (156335503).

424444865 is a wasteful number, since it uses less digits than its factorization.

424444865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384148.

The product of its digits is 491520, while the sum is 41.

The square root of 424444865 is about 20602.0597271244. The cubic root of 424444865 is about 751.5198011553.

The spelling of 424444865 in words is "four hundred twenty-four million, four hundred forty-four thousand, eight hundred sixty-five".