1438427 has 4 divisors (see below), whose sum is σ = 1442280. Its totient is φ = 1434576.

The previous prime is 1438417. The next prime is 1438447. The reversal of 1438427 is 7248341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1438427 is a prime.

It is an Ulam number.

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 1438427.

It is not an unprimeable number, because it can be changed into a prime (1438417) 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, 1298 + ... + 2135.

It is an arithmetic number, because the mean of its divisors is an integer number (360570).

2^1438427 is an apocalyptic number.

1438427 is a deficient number, since it is larger than the sum of its proper divisors (3853).

1438427 is an equidigital number, since it uses as much as digits as its factorization.

1438427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852.

The product of its digits is 5376, while the sum is 29.

The square root of 1438427 is about 1199.3444042476. The cubic root of 1438427 is about 112.8831904382.

The spelling of 1438427 in words is "one million, four hundred thirty-eight thousand, four hundred twenty-seven".