2205919 has 4 divisors (see below), whose sum is σ = 2322040. Its totient is φ = 2089800.

The previous prime is 2205911. The next prime is 2205947. The reversal of 2205919 is 9195022.

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

It is a cyclic number.

It is not a de Polignac number, because 2205919 - 2³ = 2205911 is a prime.

It is a super-2 number, since 2×2205919² = 9732157269122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205911) 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, 58032 + ... + 58069.

It is an arithmetic number, because the mean of its divisors is an integer number (580510).

2^2205919 is an apocalyptic number.

2205919 is the 858-th hex number.

2205919 is a deficient number, since it is larger than the sum of its proper divisors (116121).

2205919 is a wasteful number, since it uses less digits than its factorization.

2205919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116120.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 2205919 is about 1485.2336516522. The cubic root of 2205919 is about 130.1756796425.

The spelling of 2205919 in words is "two million, two hundred five thousand, nine hundred nineteen".