1138404 has 24 divisors (see below), whose sum is σ = 2796640. Its totient is φ = 359424.

The previous prime is 1138393. The next prime is 1138409. The reversal of 1138404 is 4048311.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1138409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2269 + ... + 2724.

2^1138404 is an apocalyptic number.

It is an amenable number.

1138404 is an abundant number, since it is smaller than the sum of its proper divisors (1658236).

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

1138404 is a wasteful number, since it uses less digits than its factorization.

1138404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5019 (or 5017 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1138404 is about 1066.9601679538. The cubic root of 1138404 is about 104.4156198646.

The spelling of 1138404 in words is "one million, one hundred thirty-eight thousand, four hundred four".