2189470 has 8 divisors (see below), whose sum is σ = 3941064. Its totient is φ = 875784.

The previous prime is 2189461. The next prime is 2189477. The reversal of 2189470 is 749812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189477) 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, 109464 + ... + 109483.

It is an arithmetic number, because the mean of its divisors is an integer number (492633).

2^2189470 is an apocalyptic number.

2189470 is a deficient number, since it is larger than the sum of its proper divisors (1751594).

2189470 is a wasteful number, since it uses less digits than its factorization.

2189470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218954.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 2189470 is about 1479.6857774541. The cubic root of 2189470 is about 129.8513092861.

The spelling of 2189470 in words is "two million, one hundred eighty-nine thousand, four hundred seventy".