440000025040 has 40 divisors (see below), whose sum is σ = 1023308530848. Its totient is φ = 175946939520.

The previous prime is 440000025029. The next prime is 440000025077. The reversal of 440000025040 is 40520000044.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 440000024999 and 440000025017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561726 + ... + 1093405.

Almost surely, 2^440000025040 is an apocalyptic number.

440000025040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440000025040 is an abundant number, since it is smaller than the sum of its proper divisors (583308505808).

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

440000025040 is a wasteful number, since it uses less digits than its factorization.

440000025040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658467 (or 1658461 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

Adding to 440000025040 its reverse (40520000044), we get a palindrome (480520025084).

The spelling of 440000025040 in words is "four hundred forty billion, twenty-five thousand, forty".