1438798 has 8 divisors (see below), whose sum is σ = 2163600. Its totient is φ = 717600.

The previous prime is 1438793. The next prime is 1438817. The reversal of 1438798 is 8978341.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1438798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438793) 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, 598 + ... + 1798.

It is an arithmetic number, because the mean of its divisors is an integer number (270450).

2^1438798 is an apocalyptic number.

1438798 is a deficient number, since it is larger than the sum of its proper divisors (724802).

1438798 is a wasteful number, since it uses less digits than its factorization.

1438798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802.

The product of its digits is 48384, while the sum is 40.

The square root of 1438798 is about 1199.4990621088. The cubic root of 1438798 is about 112.8928945719.

The spelling of 1438798 in words is "one million, four hundred thirty-eight thousand, seven hundred ninety-eight".