431838989 has 8 divisors (see below), whose sum is σ = 436531200. Its totient is φ = 427167216.

The previous prime is 431838949. The next prime is 431839013. The reversal of 431838989 is 989838134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 431838989 - 2¹⁶ = 431773453 is a prime.

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 431838989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431838949) 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 7 ways as a sum of consecutive naturals, for example, 39452 + ... + 49194.

It is an arithmetic number, because the mean of its divisors is an integer number (54566400).

Almost surely, 2^431838989 is an apocalyptic number.

It is an amenable number.

431838989 is a deficient number, since it is larger than the sum of its proper divisors (4692211).

431838989 is a wasteful number, since it uses less digits than its factorization.

431838989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10219.

The product of its digits is 1492992, while the sum is 53.

The square root of 431838989 is about 20780.7360071774. The cubic root of 431838989 is about 755.8587010683.

The spelling of 431838989 in words is "four hundred thirty-one million, eight hundred thirty-eight thousand, nine hundred eighty-nine".