420830783897 has 2 divisors, whose sum is σ = 420830783898. Its totient is φ = 420830783896.

The previous prime is 420830783827. The next prime is 420830783911. The reversal of 420830783897 is 798387038024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404643565456 + 16187218441 = 636116^2 + 127229^2 .

It is a cyclic number.

It is not a de Polignac number, because 420830783897 - 2⁸ = 420830783641 is a prime.

It is not a weakly prime, because it can be changed into another prime (420830783827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210415391948 + 210415391949.

It is an arithmetic number, because the mean of its divisors is an integer number (210415391949).

Almost surely, 2^420830783897 is an apocalyptic number.

It is an amenable number.

420830783897 is a deficient number, since it is larger than the sum of its proper divisors (1).

420830783897 is an equidigital number, since it uses as much as digits as its factorization.

420830783897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16257024, while the sum is 59.

The spelling of 420830783897 in words is "four hundred twenty billion, eight hundred thirty million, seven hundred eighty-three thousand, eight hundred ninety-seven".