1138444 has 12 divisors (see below), whose sum is σ = 2056768. Its totient is φ = 550800.

The previous prime is 1138441. The next prime is 1138451. The reversal of 1138444 is 4448311.

It is a super-2 number, since 2×1138444² = 2592109482272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1138441) 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, 4467 + ... + 4714.

2^1138444 is an apocalyptic number.

It is an amenable number.

1138444 is a deficient number, since it is larger than the sum of its proper divisors (918324).

1138444 is a wasteful number, since it uses less digits than its factorization.

1138444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9216 (or 9214 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 1138444 is about 1066.9789126314. The cubic root of 1138444 is about 104.4168427977.

The spelling of 1138444 in words is "one million, one hundred thirty-eight thousand, four hundred forty-four".