4391378 has 8 divisors (see below), whose sum is σ = 6595968. Its totient is φ = 2192724.

The previous prime is 4391371. The next prime is 4391393. The reversal of 4391378 is 8731934.

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

It is not an unprimeable number, because it can be changed into a prime (4391371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075 + ... + 3617.

It is an arithmetic number, because the mean of its divisors is an integer number (824496).

Almost surely, 2^4391378 is an apocalyptic number.

4391378 is a deficient number, since it is larger than the sum of its proper divisors (2204590).

4391378 is a wasteful number, since it uses less digits than its factorization.

4391378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968.

The product of its digits is 18144, while the sum is 35.

The square root of 4391378 is about 2095.5614999327. The cubic root of 4391378 is about 163.7571509804.

The spelling of 4391378 in words is "four million, three hundred ninety-one thousand, three hundred seventy-eight".