4378591 has 12 divisors (see below), whose sum is σ = 5130912. Its totient is φ = 3725568.

The previous prime is 4378559. The next prime is 4378609. The reversal of 4378591 is 1958734.

It is not a de Polignac number, because 4378591 - 2⁵ = 4378559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4378591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4378511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9226 + ... + 9688.

It is an arithmetic number, because the mean of its divisors is an integer number (427576).

Almost surely, 2^4378591 is an apocalyptic number.

4378591 is a deficient number, since it is larger than the sum of its proper divisors (752321).

4378591 is a wasteful number, since it uses less digits than its factorization.

4378591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 663 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 4378591 is about 2092.5083034483. The cubic root of 4378591 is about 163.5980514590.

The spelling of 4378591 in words is "four million, three hundred seventy-eight thousand, five hundred ninety-one".