1438867 has 2 divisors, whose sum is σ = 1438868. Its totient is φ = 1438866.

The previous prime is 1438849. The next prime is 1438883. The reversal of 1438867 is 7688341.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1438867 - 2¹⁹ = 914579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1438817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719433 + 719434.

It is an arithmetic number, because the mean of its divisors is an integer number (719434).

2^1438867 is an apocalyptic number.

1438867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438867 is an equidigital number, since it uses as much as digits as its factorization.

1438867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 1438867 is about 1199.5278237707. The cubic root of 1438867 is about 112.8946991998.

The spelling of 1438867 in words is "one million, four hundred thirty-eight thousand, eight hundred sixty-seven".