4378646 has 4 divisors (see below), whose sum is σ = 6567972. Its totient is φ = 2189322.

The previous prime is 4378631. The next prime is 4378697. The reversal of 4378646 is 6468734.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094660 + ... + 1094663.

It is an arithmetic number, because the mean of its divisors is an integer number (1641993).

Almost surely, 2^4378646 is an apocalyptic number.

4378646 is a deficient number, since it is larger than the sum of its proper divisors (2189326).

4378646 is a wasteful number, since it uses less digits than its factorization.

4378646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189325.

The product of its digits is 96768, while the sum is 38.

The square root of 4378646 is about 2092.5214455293. The cubic root of 4378646 is about 163.5987364477.

The spelling of 4378646 in words is "four million, three hundred seventy-eight thousand, six hundred forty-six".