444002040 has 64 divisors (see below), whose sum is σ = 1480010400. Its totient is φ = 118400256.

The previous prime is 444002023. The next prime is 444002071. The reversal of 444002040 is 40200444.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204477 + ... + 206636.

Almost surely, 2^444002040 is an apocalyptic number.

444002040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444002040 is an abundant number, since it is smaller than the sum of its proper divisors (1036008360).

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

444002040 is a wasteful number, since it uses less digits than its factorization.

444002040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411133 (or 411123 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 444002040 is about 21071.3559127077. The cubic root of 444002040 is about 762.8895309711.

Adding to 444002040 its reverse (40200444), we get a palindrome (484202484).

The spelling of 444002040 in words is "four hundred forty-four million, two thousand, forty".