421448833 has 8 divisors (see below), whose sum is σ = 466135208. Its totient is φ = 378514944.

The previous prime is 421448791. The next prime is 421448837. The reversal of 421448833 is 338844124.

It can be written as a sum of positive squares in 4 ways, for example, as 185150449 + 236298384 = 13607^2 + 15372^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421448833 - 2¹³ = 421440641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421448792 and 421448801.

It is not an unprimeable number, because it can be changed into a prime (421448837) 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 in 7 ways as a sum of consecutive naturals, for example, 437616 + ... + 438577.

It is an arithmetic number, because the mean of its divisors is an integer number (58266901).

Almost surely, 2^421448833 is an apocalyptic number.

It is an amenable number.

421448833 is a deficient number, since it is larger than the sum of its proper divisors (44686375).

421448833 is a wasteful number, since it uses less digits than its factorization.

421448833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876243.

The product of its digits is 73728, while the sum is 37.

The square root of 421448833 is about 20529.2190060898. The cubic root of 421448833 is about 749.7473715073.

The spelling of 421448833 in words is "four hundred twenty-one million, four hundred forty-eight thousand, eight hundred thirty-three".