4378641 has 16 divisors (see below), whose sum is σ = 6035328. Its totient is φ = 2822400.

The previous prime is 4378631. The next prime is 4378697. The reversal of 4378641 is 1468734.

It is not a de Polignac number, because 4378641 - 2⁵ = 4378609 is a prime.

4378641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4378631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12825 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (377208).

Almost surely, 2^4378641 is an apocalyptic number.

It is an amenable number.

4378641 is a deficient number, since it is larger than the sum of its proper divisors (1656687).

4378641 is a wasteful number, since it uses less digits than its factorization.

4378641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its digits is 16128, while the sum is 33.

The square root of 4378641 is about 2092.5202507981. The cubic root of 4378641 is about 163.5986741762.

The spelling of 4378641 in words is "four million, three hundred seventy-eight thousand, six hundred forty-one".