1438743 has 4 divisors (see below), whose sum is σ = 1918328. Its totient is φ = 959160.

The previous prime is 1438729. The next prime is 1438747. The reversal of 1438743 is 3478341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3478341 = 3 ⋅1159447.

It is not a de Polignac number, because 1438743 - 2⁹ = 1438231 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1438743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438747) 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, 239788 + ... + 239793.

It is an arithmetic number, because the mean of its divisors is an integer number (479582).

2^1438743 is an apocalyptic number.

1438743 is a deficient number, since it is larger than the sum of its proper divisors (479585).

1438743 is an equidigital number, since it uses as much as digits as its factorization.

1438743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479584.

The product of its digits is 8064, while the sum is 30.

The square root of 1438743 is about 1199.4761356526. The cubic root of 1438743 is about 112.8914560590.

The spelling of 1438743 in words is "one million, four hundred thirty-eight thousand, seven hundred forty-three".