4389431 has 4 divisors (see below), whose sum is σ = 4413864. Its totient is φ = 4365000.

The previous prime is 4389403. The next prime is 4389439. The reversal of 4389431 is 1349834.

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

It is a cyclic number.

It is not a de Polignac number, because 4389431 - 2⁶ = 4389367 is a prime.

It is a super-2 number, since 2×4389431² = 38534209007522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4389439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11945 + ... + 12306.

It is an arithmetic number, because the mean of its divisors is an integer number (1103466).

Almost surely, 2^4389431 is an apocalyptic number.

4389431 is a deficient number, since it is larger than the sum of its proper divisors (24433).

4389431 is a wasteful number, since it uses less digits than its factorization.

4389431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24432.

The product of its digits is 10368, while the sum is 32.

The square root of 4389431 is about 2095.0968951340. The cubic root of 4389431 is about 163.7329457988.

The spelling of 4389431 in words is "four million, three hundred eighty-nine thousand, four hundred thirty-one".