2139109 has 8 divisors (see below), whose sum is σ = 2481728. Its totient is φ = 1805760.

The previous prime is 2139107. The next prime is 2139131. The reversal of 2139109 is 9019312.

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

It is a cyclic number.

It is not a de Polignac number, because 2139109 - 2¹ = 2139107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139107) 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, 1812 + ... + 2749.

It is an arithmetic number, because the mean of its divisors is an integer number (310216).

2^2139109 is an apocalyptic number.

It is an amenable number.

2139109 is a deficient number, since it is larger than the sum of its proper divisors (342619).

2139109 is an equidigital number, since it uses as much as digits as its factorization.

2139109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4635.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 2139109 is about 1462.5693145967. The cubic root of 2139109 is about 128.8479871151.

The spelling of 2139109 in words is "two million, one hundred thirty-nine thousand, one hundred nine".