2478929 has 4 divisors (see below), whose sum is σ = 2484900. Its totient is φ = 2472960.

The previous prime is 2478899. The next prime is 2478937. The reversal of 2478929 is 9298742.

2478929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9298742 = 2 ⋅4649371.

It can be written as a sum of positive squares in 2 ways, for example, as 1098304 + 1380625 = 1048^2 + 1175^2 .

It is a cyclic number.

It is not a de Polignac number, because 2478929 - 2⁸ = 2478673 is a prime.

It is a super-2 number, since 2×2478929² = 12290177974082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2478029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312 + ... + 3209.

It is an arithmetic number, because the mean of its divisors is an integer number (621225).

2^2478929 is an apocalyptic number.

It is an amenable number.

2478929 is a deficient number, since it is larger than the sum of its proper divisors (5971).

2478929 is an equidigital number, since it uses as much as digits as its factorization.

2478929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5970.

The product of its digits is 72576, while the sum is 41.

The square root of 2478929 is about 1574.4614952421. The cubic root of 2478929 is about 135.3385012357.

The spelling of 2478929 in words is "two million, four hundred seventy-eight thousand, nine hundred twenty-nine".