444537040 has 20 divisors (see below), whose sum is σ = 1033548804. Its totient is φ = 177814784.

The previous prime is 444537019. The next prime is 444537061. The reversal of 444537040 is 40735444.

It is an interprime number because it is at equal distance from previous prime (444537019) and next prime (444537061).

It can be written as a sum of positive squares in 2 ways, for example, as 208975936 + 235561104 = 14456^2 + 15348^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×444537040² = 395226359863923200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 444536993 and 444537011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2778277 + ... + 2778436.

Almost surely, 2^444537040 is an apocalyptic number.

444537040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444537040 is an abundant number, since it is smaller than the sum of its proper divisors (589011764).

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

444537040 is a wasteful number, since it uses less digits than its factorization.

444537040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556726 (or 5556720 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 444537040 is about 21084.0470498432. The cubic root of 444537040 is about 763.1958224144.

The spelling of 444537040 in words is "four hundred forty-four million, five hundred thirty-seven thousand, forty".