431949 has 16 divisors (see below), whose sum is σ = 670208. Its totient is φ = 242352.

The previous prime is 431947. The next prime is 431983. The reversal of 431949 is 949134.

It is not a de Polignac number, because 431949 - 2¹ = 431947 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431947) 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 15 ways as a sum of consecutive naturals, for example, 1254 + ... + 1560.

It is an arithmetic number, because the mean of its divisors is an integer number (41888).

2⁴³¹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

431949 is a deficient number, since it is larger than the sum of its proper divisors (238259).

431949 is a wasteful number, since it uses less digits than its factorization.

431949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384.

The product of its digits is 3888, while the sum is 30.

The square root of 431949 is about 657.2282708466. The cubic root of 431949 is about 75.5922880630.

The spelling of 431949 in words is "four hundred thirty-one thousand, nine hundred forty-nine".