9428046421 has 4 divisors (see below), whose sum is σ = 9753151500. Its totient is φ = 9102941344.

The previous prime is 9428046401. The next prime is 9428046497. The reversal of 9428046421 is 1246408249.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4490876196 + 4937170225 = 67014^2 + 70265^2 .

It is a cyclic number.

It is not a de Polignac number, because 9428046421 - 2⁵ = 9428046389 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9428046401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162552496 + ... + 162552553.

It is an arithmetic number, because the mean of its divisors is an integer number (2438287875).

Almost surely, 2^9428046421 is an apocalyptic number.

It is an amenable number.

9428046421 is a deficient number, since it is larger than the sum of its proper divisors (325105079).

9428046421 is a wasteful number, since it uses less digits than its factorization.

9428046421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325105078.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 9428046421 is about 97098.1277934853. The cubic root of 9428046421 is about 2112.5511710397.

The spelling of 9428046421 in words is "nine billion, four hundred twenty-eight million, forty-six thousand, four hundred twenty-one".