1138398 has 8 divisors (see below), whose sum is σ = 2276808. Its totient is φ = 379464.

The previous prime is 1138393. The next prime is 1138409. The reversal of 1138398 is 8938311.

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

1138398 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138391) 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 3 ways as a sum of consecutive naturals, for example, 94861 + ... + 94872.

It is an arithmetic number, because the mean of its divisors is an integer number (284601).

2^1138398 is an apocalyptic number.

1138398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1138398 is a wasteful number, since it uses less digits than its factorization.

1138398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189738.

The product of its digits is 5184, while the sum is 33.

The square root of 1138398 is about 1066.9573562238. The cubic root of 1138398 is about 104.4154364221.

The spelling of 1138398 in words is "one million, one hundred thirty-eight thousand, three hundred ninety-eight".