2138229 has 6 divisors (see below), whose sum is σ = 3088566. Its totient is φ = 1425480.

The previous prime is 2138221. The next prime is 2138231. The reversal of 2138229 is 9228312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 1004004 = 1065^2 + 1002^2 .

It is not a de Polignac number, because 2138229 - 2³ = 2138221 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 3³ + 8 + 2¹⁵ + 2²¹ + 9² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118782 + ... + 118799.

It is an arithmetic number, because the mean of its divisors is an integer number (514761).

2^2138229 is an apocalyptic number.

It is an amenable number.

2138229 is a deficient number, since it is larger than the sum of its proper divisors (950337).

2138229 is a wasteful number, since it uses less digits than its factorization.

2138229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237587 (or 237584 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2138229 is about 1462.2684432073. The cubic root of 2138229 is about 128.8303159289.

The spelling of 2138229 in words is "two million, one hundred thirty-eight thousand, two hundred twenty-nine".