421011440449 has 2 divisors, whose sum is σ = 421011440450. Its totient is φ = 421011440448.

The previous prime is 421011440371. The next prime is 421011440453. The reversal of 421011440449 is 944044110124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413378273025 + 7633167424 = 642945^2 + 87368^2 .

It is a cyclic number.

It is not a de Polignac number, because 421011440449 - 2²¹ = 421009343297 is a prime.

It is not a weakly prime, because it can be changed into another prime (421011440249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210505720224 + 210505720225.

It is an arithmetic number, because the mean of its divisors is an integer number (210505720225).

Almost surely, 2^421011440449 is an apocalyptic number.

It is an amenable number.

421011440449 is a deficient number, since it is larger than the sum of its proper divisors (1).

421011440449 is an equidigital number, since it uses as much as digits as its factorization.

421011440449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 421011440449 in words is "four hundred twenty-one billion, eleven million, four hundred forty thousand, four hundred forty-nine".