2138347 has 6 divisors (see below), whose sum is σ = 2197932. Its totient is φ = 2079252.

The previous prime is 2138327. The next prime is 2138363. The reversal of 2138347 is 7438312.

It is a de Polignac number, because none of the positive numbers 2^k-2138347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138327) 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, 9478 + ... + 9700.

It is an arithmetic number, because the mean of its divisors is an integer number (366322).

2^2138347 is an apocalyptic number.

2138347 is a deficient number, since it is larger than the sum of its proper divisors (59585).

2138347 is an frugal number, since it uses more digits than its factorization.

2138347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 266 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 2138347 is about 1462.3087909193. The cubic root of 2138347 is about 128.8326857557.

It can be divided in two parts, 21383 and 47, that multiplied together give a palindrome (1005001).

The spelling of 2138347 in words is "two million, one hundred thirty-eight thousand, three hundred forty-seven".