4378427 has 4 divisors (see below), whose sum is σ = 4421040. Its totient is φ = 4335816.

The previous prime is 4378403. The next prime is 4378447. The reversal of 4378427 is 7248734.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7248734 = 2 ⋅3624367.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4378427 is a prime.

It is a d-powerful number, because it can be written as 4⁶ + 3¹¹ + 7³ + 8 + 4¹¹ + 2⁷ + 7⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4378447) 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 3 ways as a sum of consecutive naturals, for example, 21152 + ... + 21357.

It is an arithmetic number, because the mean of its divisors is an integer number (1105260).

Almost surely, 2^4378427 is an apocalyptic number.

4378427 is a deficient number, since it is larger than the sum of its proper divisors (42613).

4378427 is a wasteful number, since it uses less digits than its factorization.

4378427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42612.

The product of its digits is 37632, while the sum is 35.

The square root of 4378427 is about 2092.4691156622. The cubic root of 4378427 is about 163.5960089134.

The spelling of 4378427 in words is "four million, three hundred seventy-eight thousand, four hundred twenty-seven".