420448443 has 16 divisors (see below), whose sum is σ = 579532800. Its totient is φ = 270858240.

The previous prime is 420448433. The next prime is 420448463. The reversal of 420448443 is 344844024.

It is not a de Polignac number, because 420448443 - 2⁵ = 420448411 is a prime.

It is a super-2 number, since 2×420448443² = 353553786442248498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420448433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68578 + ... + 74456.

It is an arithmetic number, because the mean of its divisors is an integer number (36220800).

Almost surely, 2^420448443 is an apocalyptic number.

420448443 is a deficient number, since it is larger than the sum of its proper divisors (159084357).

420448443 is a wasteful number, since it uses less digits than its factorization.

420448443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6682.

The product of its (nonzero) digits is 49152, while the sum is 33.

The square root of 420448443 is about 20504.8395019322. The cubic root of 420448443 is about 749.1536782341.

The spelling of 420448443 in words is "four hundred twenty million, four hundred forty-eight thousand, four hundred forty-three".