4979578 has 4 divisors (see below), whose sum is σ = 7469370. Its totient is φ = 2489788.

The previous prime is 4979563. The next prime is 4979581. The reversal of 4979578 is 8759794.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4397409 + 582169 = 2097^2 + 763^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1244893 + ... + 1244896.

Almost surely, 2^4979578 is an apocalyptic number.

4979578 is a deficient number, since it is larger than the sum of its proper divisors (2489792).

4979578 is a wasteful number, since it uses less digits than its factorization.

4979578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489791.

The product of its digits is 635040, while the sum is 49.

The square root of 4979578 is about 2231.4968070782. The cubic root of 4979578 is about 170.7644694616.

The spelling of 4979578 in words is "four million, nine hundred seventy-nine thousand, five hundred seventy-eight".