1438387 has 8 divisors (see below), whose sum is σ = 1534032. Its totient is φ = 1344000.

The previous prime is 1438379. The next prime is 1438399. The reversal of 1438387 is 7838341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1438387 - 2³ = 1438379 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1438687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3387 + ... + 3787.

It is an arithmetic number, because the mean of its divisors is an integer number (191754).

2^1438387 is an apocalyptic number.

1438387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1438387 is a deficient number, since it is larger than the sum of its proper divisors (95645).

1438387 is a wasteful number, since it uses less digits than its factorization.

1438387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629.

The product of its digits is 16128, while the sum is 34.

The square root of 1438387 is about 1199.3277283545. The cubic root of 1438387 is about 112.8821440708.

The spelling of 1438387 in words is "one million, four hundred thirty-eight thousand, three hundred eighty-seven".