4978321 has 4 divisors (see below), whose sum is σ = 5138944. Its totient is φ = 4817700.

The previous prime is 4978291. The next prime is 4978349. The reversal of 4978321 is 1238794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1238794 = 2 ⋅619397.

It is a cyclic number.

It is not a de Polignac number, because 4978321 - 2¹⁵ = 4945553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4978121) 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 3 ways as a sum of consecutive naturals, for example, 80265 + ... + 80326.

It is an arithmetic number, because the mean of its divisors is an integer number (1284736).

Almost surely, 2^4978321 is an apocalyptic number.

It is an amenable number.

4978321 is a deficient number, since it is larger than the sum of its proper divisors (160623).

4978321 is a wasteful number, since it uses less digits than its factorization.

4978321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160622.

The product of its digits is 12096, while the sum is 34.

The square root of 4978321 is about 2231.2151397837. The cubic root of 4978321 is about 170.7500995021.

The spelling of 4978321 in words is "four million, nine hundred seventy-eight thousand, three hundred twenty-one".