4978923 has 16 divisors (see below), whose sum is σ = 6931200. Its totient is φ = 3175200.

The previous prime is 4978907. The next prime is 4978937. The reversal of 4978923 is 3298794.

It is not a de Polignac number, because 4978923 - 2⁴ = 4978907 is a prime.

4978923 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4978903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12948 + ... + 13326.

It is an arithmetic number, because the mean of its divisors is an integer number (433200).

Almost surely, 2^4978923 is an apocalyptic number.

4978923 is a deficient number, since it is larger than the sum of its proper divisors (1952277).

4978923 is a wasteful number, since it uses less digits than its factorization.

4978923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562.

The product of its digits is 108864, while the sum is 42.

The square root of 4978923 is about 2231.3500397741. The cubic root of 4978923 is about 170.7569818370.

The spelling of 4978923 in words is "four million, nine hundred seventy-eight thousand, nine hundred twenty-three".