421080839 has 2 divisors, whose sum is σ = 421080840. Its totient is φ = 421080838.

The previous prime is 421080799. The next prime is 421080851. The reversal of 421080839 is 938080124.

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-421080839 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 421080799 and 421080808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421080859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210540419 + 210540420.

It is an arithmetic number, because the mean of its divisors is an integer number (210540420).

Almost surely, 2^421080839 is an apocalyptic number.

421080839 is a deficient number, since it is larger than the sum of its proper divisors (1).

421080839 is an equidigital number, since it uses as much as digits as its factorization.

421080839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 421080839 is about 20520.2543600220. The cubic root of 421080839 is about 749.5290904616.

The spelling of 421080839 in words is "four hundred twenty-one million, eighty thousand, eight hundred thirty-nine".