2103929 has 4 divisors (see below), whose sum is σ = 2110884. Its totient is φ = 2096976.

The previous prime is 2103919. The next prime is 2103953. The reversal of 2103929 is 9293012.

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 67600 + 2036329 = 260^2 + 1427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2103929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2103898 and 2103907.

It is not an unprimeable number, because it can be changed into a prime (2103919) 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, 3002 + ... + 3635.

It is an arithmetic number, because the mean of its divisors is an integer number (527721).

2^2103929 is an apocalyptic number.

It is an amenable number.

2103929 is a deficient number, since it is larger than the sum of its proper divisors (6955).

2103929 is an equidigital number, since it uses as much as digits as its factorization.

2103929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6954.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 2103929 is about 1450.4926749212. The cubic root of 2103929 is about 128.1377301648.

The spelling of 2103929 in words is "two million, one hundred three thousand, nine hundred twenty-nine".