5978921 has 8 divisors (see below), whose sum is σ = 6457920. Its totient is φ = 5502672.

The previous prime is 5978911. The next prime is 5978933. The reversal of 5978921 is 1298795.

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 5978921 - 2⁶ = 5978857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5978911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7676 + ... + 8418.

It is an arithmetic number, because the mean of its divisors is an integer number (807240).

Almost surely, 2^5978921 is an apocalyptic number.

It is an amenable number.

5978921 is a deficient number, since it is larger than the sum of its proper divisors (478999).

5978921 is a wasteful number, since it uses less digits than its factorization.

5978921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375.

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

The square root of 5978921 is about 2445.1832242186. The cubic root of 5978921 is about 181.4990146845.

The spelling of 5978921 in words is "five million, nine hundred seventy-eight thousand, nine hundred twenty-one".