2050309 has 12 divisors (see below), whose sum is σ = 2266240. Its totient is φ = 1847880.

The previous prime is 2050277. The next prime is 2050327. The reversal of 2050309 is 9030502.

It is not a de Polignac number, because 2050309 - 2⁵ = 2050277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2050339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34722 + ... + 34780.

2^2050309 is an apocalyptic number.

It is an amenable number.

2050309 is a deficient number, since it is larger than the sum of its proper divisors (215931).

2050309 is an equidigital number, since it uses as much as digits as its factorization.

2050309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 2050309 is about 1431.8900097424. The cubic root of 2050309 is about 127.0397916108.

The spelling of 2050309 in words is "two million, fifty thousand, three hundred nine".