2189974 has 16 divisors (see below), whose sum is σ = 3565296. Its totient is φ = 1004800.

The previous prime is 2189939. The next prime is 2189981. The reversal of 2189974 is 4799812.

It is a super-2 number, since 2×2189974² = 9591972241352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609 + ... + 2179.

It is an arithmetic number, because the mean of its divisors is an integer number (222831).

2^2189974 is an apocalyptic number.

2189974 is a deficient number, since it is larger than the sum of its proper divisors (1375322).

2189974 is a wasteful number, since it uses less digits than its factorization.

2189974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631.

The product of its digits is 36288, while the sum is 40.

The square root of 2189974 is about 1479.8560740829. The cubic root of 2189974 is about 129.8612721293.

The spelling of 2189974 in words is "two million, one hundred eighty-nine thousand, nine hundred seventy-four".