431969 has 4 divisors (see below), whose sum is σ = 433344. Its totient is φ = 430596.

The previous prime is 431947. The next prime is 431983. The reversal of 431969 is 969134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 431969 - 2¹⁶ = 366433 is a prime.

It is a super-2 number, since 2×431969² = 373194433922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44 + ... + 930.

It is an arithmetic number, because the mean of its divisors is an integer number (108336).

2⁴³¹⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

431969 is a deficient number, since it is larger than the sum of its proper divisors (1375).

431969 is an equidigital number, since it uses as much as digits as its factorization.

431969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374.

The product of its digits is 5832, while the sum is 32.

The square root of 431969 is about 657.2434860841. The cubic root of 431969 is about 75.5934547304.

The spelling of 431969 in words is "four hundred thirty-one thousand, nine hundred sixty-nine".