431149389 has 16 divisors (see below), whose sum is σ = 630759744. Its totient is φ = 259788800.

The previous prime is 431149357. The next prime is 431149423. The reversal of 431149389 is 983941134.

It is a cyclic number.

It is not a de Polignac number, because 431149389 - 2⁵ = 431149357 is a prime.

It is a Curzon number.

It is a partition number, being equal to the number of ways a set of 107 identical objects can be partitioned into subset.

It is a self number, because there is not a number n which added to its sum of digits gives 431149389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431149309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32052 + ... + 43469.

It is an arithmetic number, because the mean of its divisors is an integer number (39422484).

Almost surely, 2^431149389 is an apocalyptic number.

It is an amenable number.

431149389 is a deficient number, since it is larger than the sum of its proper divisors (199610355).

431149389 is a wasteful number, since it uses less digits than its factorization.

431149389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75708.

The product of its digits is 93312, while the sum is 42.

The square root of 431149389 is about 20764.1370877771. The cubic root of 431149389 is about 755.4561452743.

The spelling of 431149389 in words is "four hundred thirty-one million, one hundred forty-nine thousand, three hundred eighty-nine".