421448823 has 12 divisors (see below), whose sum is σ = 640799640. Its totient is φ = 266178096.

The previous prime is 421448791. The next prime is 421448837. The reversal of 421448823 is 328844124.

It is not a de Polignac number, because 421448823 - 2⁵ = 421448791 is a prime.

It is a super-2 number, since 2×421448823² = 355238220816170658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421448873) 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 in 11 ways as a sum of consecutive naturals, for example, 1232136 + ... + 1232477.

It is an arithmetic number, because the mean of its divisors is an integer number (53399970).

Almost surely, 2^421448823 is an apocalyptic number.

421448823 is a deficient number, since it is larger than the sum of its proper divisors (219350817).

421448823 is a wasteful number, since it uses less digits than its factorization.

421448823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464638 (or 2464635 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 421448823 is about 20529.2187625345. The cubic root of 421448823 is about 749.7473655774.

The spelling of 421448823 in words is "four hundred twenty-one million, four hundred forty-eight thousand, eight hundred twenty-three".