1438847 has 2 divisors, whose sum is σ = 1438848. Its totient is φ = 1438846.

The previous prime is 1438837. The next prime is 1438849. The reversal of 1438847 is 7488341.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1438847 - 2⁴ = 1438831 is a prime.

Together with 1438849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1438849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719423 + 719424.

It is an arithmetic number, because the mean of its divisors is an integer number (719424).

2^1438847 is an apocalyptic number.

1438847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438847 is an equidigital number, since it uses as much as digits as its factorization.

1438847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 35.

The square root of 1438847 is about 1199.5194871281. The cubic root of 1438847 is about 112.8941761252.

The spelling of 1438847 in words is "one million, four hundred thirty-eight thousand, eight hundred forty-seven".