4399291 has 4 divisors (see below), whose sum is σ = 4737712. Its totient is φ = 4060872.

The previous prime is 4399289. The next prime is 4399301. The reversal of 4399291 is 1929934.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1929934 = 2 ⋅964967.

It is a cyclic number.

It is not a de Polignac number, because 4399291 - 2¹ = 4399289 is a prime.

It is a super-2 number, since 2×4399291² = 38707522605362, which contains 22 as substring.

It is an Ulam number.

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 4399291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4390291) 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, 169191 + ... + 169216.

It is an arithmetic number, because the mean of its divisors is an integer number (1184428).

Almost surely, 2^4399291 is an apocalyptic number.

4399291 is a deficient number, since it is larger than the sum of its proper divisors (338421).

4399291 is a wasteful number, since it uses less digits than its factorization.

4399291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338420.

The product of its digits is 17496, while the sum is 37.

The square root of 4399291 is about 2097.4486882877. The cubic root of 4399291 is about 163.8554521507.

It can be divided in two parts, 439 and 9291, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 4399291 in words is "four million, three hundred ninety-nine thousand, two hundred ninety-one".