420004404440 has 32 divisors (see below), whose sum is σ = 945647272080. Its totient is φ = 167888452992.

The previous prime is 420004404439. The next prime is 420004404451. The reversal of 420004404440 is 44404400024.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 3480839 + ... + 3599478.

Almost surely, 2^420004404440 is an apocalyptic number.

420004404440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420004404440 is an abundant number, since it is smaller than the sum of its proper divisors (525642867640).

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

420004404440 is a wasteful number, since it uses less digits than its factorization.

420004404440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7081811 (or 7081807 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 420004404440 its reverse (44404400024), we get a palindrome (464408804464).

The spelling of 420004404440 in words is "four hundred twenty billion, four million, four hundred four thousand, four hundred forty".