4978189 has 8 divisors (see below), whose sum is σ = 5248512. Its totient is φ = 4712400.

The previous prime is 4978187. The next prime is 4978199. The reversal of 4978189 is 9818794.

It is a happy number.

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 4978189 - 2¹ = 4978187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4978187) 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, 1252 + ... + 3394.

It is an arithmetic number, because the mean of its divisors is an integer number (656064).

Almost surely, 2^4978189 is an apocalyptic number.

It is an amenable number.

4978189 is a deficient number, since it is larger than the sum of its proper divisors (270323).

4978189 is a wasteful number, since it uses less digits than its factorization.

4978189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267.

The product of its digits is 145152, while the sum is 46.

The square root of 4978189 is about 2231.1855592935. The cubic root of 4978189 is about 170.7485903445.

The spelling of 4978189 in words is "four million, nine hundred seventy-eight thousand, one hundred eighty-nine".