431444 has 12 divisors (see below), whose sum is σ = 813204. Its totient is φ = 199104.

The previous prime is 431441. The next prime is 431447. The reversal of 431444 is 444134.

431444 = T₃₄ + T₃₅ + ... + T₁₃₇.

It is an interprime number because it is at equal distance from previous prime (431441) and next prime (431447).

It can be written as a sum of positive squares in 2 ways, for example, as 280900 + 150544 = 530^2 + 388^2 .

It is a super-2 number, since 2×431444² = 372287850272, which contains 22 as substring.

It is a plaindrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431441) 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, 4097 + ... + 4200.

It is an arithmetic number, because the mean of its divisors is an integer number (67767).

2⁴³¹⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

431444 is a deficient number, since it is larger than the sum of its proper divisors (381760).

431444 is a wasteful number, since it uses less digits than its factorization.

431444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8314 (or 8312 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 431444 is about 656.8439692956. The cubic root of 431444 is about 75.5628177692.

Adding to 431444 its reverse (444134), we get a palindrome (875578).

The spelling of 431444 in words is "four hundred thirty-one thousand, four hundred forty-four".