2189394 has 12 divisors (see below), whose sum is σ = 4743726. Its totient is φ = 729792.

The previous prime is 2189381. The next prime is 2189399. The reversal of 2189394 is 4939812.

It can be written as a sum of positive squares in only one way, i.e., 1238769 + 950625 = 1113^2 + 975^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2189399) 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, 60799 + ... + 60834.

2^2189394 is an apocalyptic number.

2189394 is an abundant number, since it is smaller than the sum of its proper divisors (2554332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2189394 is a wasteful number, since it uses less digits than its factorization.

2189394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121641 (or 121638 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 2189394 is about 1479.6600961032. The cubic root of 2189394 is about 129.8498068199.

The spelling of 2189394 in words is "two million, one hundred eighty-nine thousand, three hundred ninety-four".