4391859 has 4 divisors (see below), whose sum is σ = 5855816. Its totient is φ = 2927904.

The previous prime is 4391857. The next prime is 4391867. The reversal of 4391859 is 9581934.

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

It is not a de Polignac number, because 4391859 - 2¹ = 4391857 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4391851) 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, 731974 + ... + 731979.

It is an arithmetic number, because the mean of its divisors is an integer number (1463954).

Almost surely, 2^4391859 is an apocalyptic number.

4391859 is a deficient number, since it is larger than the sum of its proper divisors (1463957).

4391859 is a wasteful number, since it uses less digits than its factorization.

4391859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463956.

The product of its digits is 38880, while the sum is 39.

The square root of 4391859 is about 2095.6762631666. The cubic root of 4391859 is about 163.7631296894.

The spelling of 4391859 in words is "four million, three hundred ninety-one thousand, eight hundred fifty-nine".