1438749 has 16 divisors (see below), whose sum is σ = 2296000. Its totient is φ = 885168.

The previous prime is 1438747. The next prime is 1438751. The reversal of 1438749 is 9478341.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1438747) and next prime (1438751).

It is not a de Polignac number, because 1438749 - 2¹ = 1438747 is a prime.

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

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 1699 + ... + 2400.

It is an arithmetic number, because the mean of its divisors is an integer number (143500).

2^1438749 is an apocalyptic number.

It is an amenable number.

1438749 is a deficient number, since it is larger than the sum of its proper divisors (857251).

1438749 is a wasteful number, since it uses less digits than its factorization.

1438749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121 (or 4115 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 1438749 is about 1199.4786367418. The cubic root of 1438749 is about 112.8916129895.

It can be divided in two parts, 1438 and 749, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1438749 in words is "one million, four hundred thirty-eight thousand, seven hundred forty-nine".