2189957 has 24 divisors (see below), whose sum is σ = 2954880. Its totient is φ = 1599360.

The previous prime is 2189939. The next prime is 2189981. The reversal of 2189957 is 7599812.

It is not a de Polignac number, because 2189957 - 2¹² = 2185861 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 (2189987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9044 + ... + 9282.

It is an arithmetic number, because the mean of its divisors is an integer number (123120).

2^2189957 is an apocalyptic number.

It is an amenable number.

2189957 is a deficient number, since it is larger than the sum of its proper divisors (764923).

2189957 is a wasteful number, since it uses less digits than its factorization.

2189957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 274 counting only the distinct ones).

The product of its digits is 45360, while the sum is 41.

The square root of 2189957 is about 1479.8503302699. The cubic root of 2189957 is about 129.8609361059.

The spelling of 2189957 in words is "two million, one hundred eighty-nine thousand, nine hundred fifty-seven".