420047983 has 2 divisors, whose sum is σ = 420047984. Its totient is φ = 420047982.

The previous prime is 420047909. The next prime is 420047989. The reversal of 420047983 is 389740024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420047983 is a prime.

It is equal to p_22346848 and since 420047983 and 22346848 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420047989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210023991 + 210023992.

It is an arithmetic number, because the mean of its divisors is an integer number (210023992).

Almost surely, 2^420047983 is an apocalyptic number.

420047983 is a deficient number, since it is larger than the sum of its proper divisors (1).

420047983 is an equidigital number, since it uses as much as digits as its factorization.

420047983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 420047983 is about 20495.0721638154. The cubic root of 420047983 is about 748.9157565695.

The spelling of 420047983 in words is "four hundred twenty million, forty-seven thousand, nine hundred eighty-three".