421883927 has 2 divisors, whose sum is σ = 421883928. Its totient is φ = 421883926.

The previous prime is 421883893. The next prime is 421883933. The reversal of 421883927 is 729388124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421883927 is a prime.

It is a super-3 number, since 3×421883927³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421883947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210941963 + 210941964.

It is an arithmetic number, because the mean of its divisors is an integer number (210941964).

Almost surely, 2^421883927 is an apocalyptic number.

421883927 is a deficient number, since it is larger than the sum of its proper divisors (1).

421883927 is an equidigital number, since it uses as much as digits as its factorization.

421883927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 421883927 is about 20539.8132172617. The cubic root of 421883927 is about 750.0052900368.

The spelling of 421883927 in words is "four hundred twenty-one million, eight hundred eighty-three thousand, nine hundred twenty-seven".