1138885 has 8 divisors (see below), whose sum is σ = 1490976. Its totient is φ = 828240.

The previous prime is 1138883. The next prime is 1138901. The reversal of 1138885 is 5888311.

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

It is not a de Polignac number, because 1138885 - 2¹ = 1138883 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 1138885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138883) 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, 10299 + ... + 10408.

It is an arithmetic number, because the mean of its divisors is an integer number (186372).

2^1138885 is an apocalyptic number.

It is an amenable number.

1138885 is a deficient number, since it is larger than the sum of its proper divisors (352091).

1138885 is a wasteful number, since it uses less digits than its factorization.

1138885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20723.

The product of its digits is 7680, while the sum is 34.

The square root of 1138885 is about 1067.1855508767. The cubic root of 1138885 is about 104.4303237369.

It can be divided in two parts, 113 and 8885, that added together give a palindrome (8998).

The spelling of 1138885 in words is "one million, one hundred thirty-eight thousand, eight hundred eighty-five".