4405421005 has 12 divisors (see below), whose sum is σ = 5462544636. Its totient is φ = 3410644800.

The previous prime is 4405420991. The next prime is 4405421011. The reversal of 4405421005 is 5001245044.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1621592361 + 2783828644 = 40269^2 + 52762^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4405421005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 453616 + ... + 463225.

It is an arithmetic number, because the mean of its divisors is an integer number (455212053).

Almost surely, 2^4405421005 is an apocalyptic number.

It is an amenable number.

4405421005 is a deficient number, since it is larger than the sum of its proper divisors (1057123631).

4405421005 is an equidigital number, since it uses as much as digits as its factorization.

4405421005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916908 (or 916877 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 4405421005 is about 66373.3455914345. The cubic root of 4405421005 is about 1639.3152263359.

Adding to 4405421005 its reverse (5001245044), we get a palindrome (9406666049).

The spelling of 4405421005 in words is "four billion, four hundred five million, four hundred twenty-one thousand, five".