2104749 has 6 divisors (see below), whose sum is σ = 3040206. Its totient is φ = 1403160.

The previous prime is 2104747. The next prime is 2104757. The reversal of 2104749 is 9474012.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2082249 + 22500 = 1443^2 + 150^2 .

It is not a de Polignac number, because 2104749 - 2¹ = 2104747 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 0 + 4 + 7 + 4⁵ + 9⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104741) 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, 116922 + ... + 116939.

It is an arithmetic number, because the mean of its divisors is an integer number (506701).

2^2104749 is an apocalyptic number.

It is an amenable number.

2104749 is a deficient number, since it is larger than the sum of its proper divisors (935457).

2104749 is a wasteful number, since it uses less digits than its factorization.

2104749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233867 (or 233864 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 2104749 is about 1450.7753099636. The cubic root of 2104749 is about 128.1543751009.

The spelling of 2104749 in words is "two million, one hundred four thousand, seven hundred forty-nine".