1138217 has 4 divisors (see below), whose sum is σ = 1140420. Its totient is φ = 1136016.

The previous prime is 1138213. The next prime is 1138237. The reversal of 1138217 is 7128311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7128311 = 191 ⋅37321.

It can be written as a sum of positive squares in 2 ways, for example, as 958441 + 179776 = 979^2 + 424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138217 - 2² = 1138213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1138192 and 1138201.

It is not an unprimeable number, because it can be changed into a prime (1138213) 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, 143 + ... + 1515.

It is an arithmetic number, because the mean of its divisors is an integer number (285105).

2^1138217 is an apocalyptic number.

It is an amenable number.

1138217 is a deficient number, since it is larger than the sum of its proper divisors (2203).

1138217 is an equidigital number, since it uses as much as digits as its factorization.

1138217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202.

The product of its digits is 336, while the sum is 23.

The square root of 1138217 is about 1066.8725322174. The cubic root of 1138217 is about 104.4099022722.

The spelling of 1138217 in words is "one million, one hundred thirty-eight thousand, two hundred seventeen".