4389398431 has 4 divisors (see below), whose sum is σ = 4788434664. Its totient is φ = 3990362200.

The previous prime is 4389398417. The next prime is 4389398437. The reversal of 4389398431 is 1348939834.

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

It is not a de Polignac number, because 4389398431 - 2⁷ = 4389398303 is a prime.

It is a super-2 number, since 2×4389398431² = 38533637172130523522, 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 (4389398437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199518100 + ... + 199518121.

It is an arithmetic number, because the mean of its divisors is an integer number (1197108666).

Almost surely, 2^4389398431 is an apocalyptic number.

4389398431 is a deficient number, since it is larger than the sum of its proper divisors (399036233).

4389398431 is a wasteful number, since it uses less digits than its factorization.

4389398431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399036232.

The product of its digits is 2239488, while the sum is 52.

The square root of 4389398431 is about 66252.5352797914. The cubic root of 4389398431 is about 1637.3254083886.

The spelling of 4389398431 in words is "four billion, three hundred eighty-nine million, three hundred ninety-eight thousand, four hundred thirty-one".