1138993 has 8 divisors (see below), whose sum is σ = 1209920. Its totient is φ = 1069200.

The previous prime is 1138987. The next prime is 1138997. The reversal of 1138993 is 3998311.

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

It is a cyclic number.

It is not a de Polignac number, because 1138993 - 2⁵ = 1138961 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1138997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2671 + ... + 3067.

It is an arithmetic number, because the mean of its divisors is an integer number (151240).

2^1138993 is an apocalyptic number.

It is an amenable number.

1138993 is a deficient number, since it is larger than the sum of its proper divisors (70927).

1138993 is a wasteful number, since it uses less digits than its factorization.

1138993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567.

The product of its digits is 5832, while the sum is 34.

The square root of 1138993 is about 1067.2361500624. The cubic root of 1138993 is about 104.4336246609.

The spelling of 1138993 in words is "one million, one hundred thirty-eight thousand, nine hundred ninety-three".