4399231 has 4 divisors (see below), whose sum is σ = 4461264. Its totient is φ = 4337200.

The previous prime is 4399223. The next prime is 4399237. The reversal of 4399231 is 1329934.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1329934 = 2 ⋅664967.

It is a cyclic number.

It is not a de Polignac number, because 4399231 - 2³ = 4399223 is a prime.

It is a super-2 number, since 2×4399231² = 38706466782722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4399193 and 4399202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4399237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30910 + ... + 31051.

It is an arithmetic number, because the mean of its divisors is an integer number (1115316).

Almost surely, 2^4399231 is an apocalyptic number.

4399231 is a deficient number, since it is larger than the sum of its proper divisors (62033).

4399231 is an equidigital number, since it uses as much as digits as its factorization.

4399231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62032.

The product of its digits is 5832, while the sum is 31.

The square root of 4399231 is about 2097.4343851477. The cubic root of 4399231 is about 163.8547072297.

The spelling of 4399231 in words is "four million, three hundred ninety-nine thousand, two hundred thirty-one".