440412213491 has 2 divisors, whose sum is σ = 440412213492. Its totient is φ = 440412213490.

The previous prime is 440412213377. The next prime is 440412213529. The reversal of 440412213491 is 194312214044.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440412213491 is a prime.

It is not a weakly prime, because it can be changed into another prime (440412213091) by changing a digit.

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 as a sum of consecutive naturals, namely, 220206106745 + 220206106746.

It is an arithmetic number, because the mean of its divisors is an integer number (220206106746).

Almost surely, 2^440412213491 is an apocalyptic number.

440412213491 is a deficient number, since it is larger than the sum of its proper divisors (1).

440412213491 is an equidigital number, since it uses as much as digits as its factorization.

440412213491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 440412213491 in words is "four hundred forty billion, four hundred twelve million, two hundred thirteen thousand, four hundred ninety-one".