9378421 has 8 divisors (see below), whose sum is σ = 10178784. Its totient is φ = 8589360.

The previous prime is 9378409. The next prime is 9378431. The reversal of 9378421 is 1248739.

9378421 = T₃₁₁ + T₃₁₂ + ... + T₄₄₁.

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

It is not a de Polignac number, because 9378421 - 2¹¹ = 9376373 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 (9378431) 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, 1051 + ... + 4456.

It is an arithmetic number, because the mean of its divisors is an integer number (1272348).

Almost surely, 2^9378421 is an apocalyptic number.

It is an amenable number.

9378421 is a deficient number, since it is larger than the sum of its proper divisors (800363).

9378421 is a wasteful number, since it uses less digits than its factorization.

9378421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5651.

The product of its digits is 12096, while the sum is 34.

The square root of 9378421 is about 3062.4207744854. The cubic root of 9378421 is about 210.8838110566.

The spelling of 9378421 in words is "nine million, three hundred seventy-eight thousand, four hundred twenty-one".