2104939 has 8 divisors (see below), whose sum is σ = 2166480. Its totient is φ = 2044416.

The previous prime is 2104933. The next prime is 2104951. The reversal of 2104939 is 9394012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 9-Lehmer number, since φ(2104939) divides (2104939-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 2104939 - 2⁷ = 2104811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2104933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5787 + ... + 6139.

It is an arithmetic number, because the mean of its divisors is an integer number (270810).

2^2104939 is an apocalyptic number.

2104939 is a deficient number, since it is larger than the sum of its proper divisors (61541).

2104939 is an equidigital number, since it uses as much as digits as its factorization.

2104939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2104939 is about 1450.8407907141. The cubic root of 2104939 is about 128.1582312374.

The spelling of 2104939 in words is "two million, one hundred four thousand, nine hundred thirty-nine".