421496239 has 2 divisors, whose sum is σ = 421496240. Its totient is φ = 421496238.

The previous prime is 421496221. The next prime is 421496261. The reversal of 421496239 is 932694124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421496239 - 2¹¹ = 421494191 is a prime.

It is a super-2 number, since 2×421496239² = 355318158982290242, which contains 22 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 (421496279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210748119 + 210748120.

It is an arithmetic number, because the mean of its divisors is an integer number (210748120).

Almost surely, 2^421496239 is an apocalyptic number.

421496239 is a deficient number, since it is larger than the sum of its proper divisors (1).

421496239 is an equidigital number, since it uses as much as digits as its factorization.

421496239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 421496239 is about 20530.3735718569. The cubic root of 421496239 is about 749.7754818325.

The spelling of 421496239 in words is "four hundred twenty-one million, four hundred ninety-six thousand, two hundred thirty-nine".