444442240 has 64 divisors (see below), whose sum is σ = 1159103520. Its totient is φ = 161612800.

The previous prime is 444442223. The next prime is 444442247. The reversal of 444442240 is 42244444.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 444442199 and 444442208.

It is not an unprimeable number, because it can be changed into a prime (444442247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24526 + ... + 38605.

Almost surely, 2^444442240 is an apocalyptic number.

444442240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444442240 is an abundant number, since it is smaller than the sum of its proper divisors (714661280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444442240 is a wasteful number, since it uses less digits than its factorization.

444442240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63161 (or 63149 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

The square root of 444442240 is about 21081.7987847337. The cubic root of 444442240 is about 763.1415666373.

Adding to 444442240 its reverse (42244444), we get a palindrome (486686684).

The spelling of 444442240 in words is "four hundred forty-four million, four hundred forty-two thousand, two hundred forty".