1431444 has 24 divisors (see below), whose sum is σ = 3817408. Its totient is φ = 408960.

The previous prime is 1431439. The next prime is 1431449. The reversal of 1431444 is 4441341.

It is an interprime number because it is at equal distance from previous prime (1431439) and next prime (1431449).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1431444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8437 + ... + 8604.

2^1431444 is an apocalyptic number.

1431444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1431444 is an abundant number, since it is smaller than the sum of its proper divisors (2385964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1431444 is a wasteful number, since it uses less digits than its factorization.

1431444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17055 (or 17053 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 1431444 is about 1196.4296886988. The cubic root of 1431444 is about 112.7002261446.

Adding to 1431444 its reverse (4441341), we get a palindrome (5872785).

The spelling of 1431444 in words is "one million, four hundred thirty-one thousand, four hundred forty-four".