4378406 has 8 divisors (see below), whose sum is σ = 6607440. Its totient is φ = 2175928.

The previous prime is 4378403. The next prime is 4378447. The reversal of 4378406 is 6048734.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4378403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6221 + ... + 6888.

It is an arithmetic number, because the mean of its divisors is an integer number (825930).

Almost surely, 2^4378406 is an apocalyptic number.

4378406 is a deficient number, since it is larger than the sum of its proper divisors (2229034).

4378406 is a wasteful number, since it uses less digits than its factorization.

4378406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13278.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 4378406 is about 2092.4640976609. The cubic root of 4378406 is about 163.5957473643.

The spelling of 4378406 in words is "four million, three hundred seventy-eight thousand, four hundred six".