1138727 has 8 divisors (see below), whose sum is σ = 1216560. Its totient is φ = 1062720.

The previous prime is 1138717. The next prime is 1138729. The reversal of 1138727 is 7278311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1138727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138729) 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, 977 + ... + 1797.

It is an arithmetic number, because the mean of its divisors is an integer number (152070).

2^1138727 is an apocalyptic number.

1138727 is a deficient number, since it is larger than the sum of its proper divisors (77833).

1138727 is an equidigital number, since it uses as much as digits as its factorization.

1138727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913.

The product of its digits is 2352, while the sum is 29.

The square root of 1138727 is about 1067.1115218195. Note that the first 3 decimals coincide. The cubic root of 1138727 is about 104.4254942314.

The spelling of 1138727 in words is "one million, one hundred thirty-eight thousand, seven hundred twenty-seven".