2179489 has 8 divisors (see below), whose sum is σ = 2358720. Its totient is φ = 2001936.

The previous prime is 2179477. The next prime is 2179523. The reversal of 2179489 is 9849712.

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

It is a cyclic number.

It is not a de Polignac number, because 2179489 - 2⁷ = 2179361 is a prime.

It is a super-2 number, since 2×2179489² = 9500344602242, which contains 22 as substring.

2179489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2179459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4434 + ... + 4900.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

2^2179489 is an apocalyptic number.

2179489 is the 934-th heptagonal number.

It is an amenable number.

2179489 is a deficient number, since it is larger than the sum of its proper divisors (179231).

2179489 is a wasteful number, since it uses less digits than its factorization.

2179489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839.

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

The square root of 2179489 is about 1476.3092494461. The cubic root of 2179489 is about 129.6536936802.

The spelling of 2179489 in words is "two million, one hundred seventy-nine thousand, four hundred eighty-nine".