2107949 has 4 divisors (see below), whose sum is σ = 2231964. Its totient is φ = 1983936.

The previous prime is 2107939. The next prime is 2107961. The reversal of 2107949 is 9497012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1020100 + 1087849 = 1010^2 + 1043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2107949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2107909) 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, 61982 + ... + 62015.

It is an arithmetic number, because the mean of its divisors is an integer number (557991).

2^2107949 is an apocalyptic number.

It is an amenable number.

2107949 is a deficient number, since it is larger than the sum of its proper divisors (124015).

2107949 is a wasteful number, since it uses less digits than its factorization.

2107949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124014.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 2107949 is about 1451.8777496745. The cubic root of 2107949 is about 128.2192896258.

The spelling of 2107949 in words is "two million, one hundred seven thousand, nine hundred forty-nine".