2207889 has 6 divisors (see below), whose sum is σ = 3189186. Its totient is φ = 1471920.

The previous prime is 2207879. The next prime is 2207893. The reversal of 2207889 is 9887022.

It can be written as a sum of positive squares in only one way, i.e., 1710864 + 497025 = 1308^2 + 705^2 .

It is not a de Polignac number, because 2207889 - 2⁴ = 2207873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2207879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122652 + ... + 122669.

It is an arithmetic number, because the mean of its divisors is an integer number (531531).

2^2207889 is an apocalyptic number.

It is an amenable number.

2207889 is a deficient number, since it is larger than the sum of its proper divisors (981297).

2207889 is a wasteful number, since it uses less digits than its factorization.

2207889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245327 (or 245324 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 2207889 is about 1485.8966989667. The cubic root of 2207889 is about 130.2144193223.

The spelling of 2207889 in words is "two million, two hundred seven thousand, eight hundred eighty-nine".