10478439421 has 4 divisors (see below), whose sum is σ = 10479691872. Its totient is φ = 10477186972.

The previous prime is 10478439401. The next prime is 10478439427. The reversal of 10478439421 is 12493487401.

10478439421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12493487401 = 179 ⋅69796019.

It is a cyclic number.

It is not a de Polignac number, because 10478439421 - 2¹⁷ = 10478308349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10478439427) 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 3 ways as a sum of consecutive naturals, for example, 613591 + ... + 630436.

It is an arithmetic number, because the mean of its divisors is an integer number (2619922968).

Almost surely, 2^10478439421 is an apocalyptic number.

It is an amenable number.

10478439421 is a deficient number, since it is larger than the sum of its proper divisors (1252451).

10478439421 is an equidigital number, since it uses as much as digits as its factorization.

10478439421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252450.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 10478439421 in words is "ten billion, four hundred seventy-eight million, four hundred thirty-nine thousand, four hundred twenty-one".