2478408239 has 2 divisors, whose sum is σ = 2478408240. Its totient is φ = 2478408238.

The previous prime is 2478408209. The next prime is 2478408253. The reversal of 2478408239 is 9328048742.

2478408239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2478408239 - 2⁸ = 2478407983 is a prime.

It is a super-2 number, since 2×2478408239² = 12285014798286162242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2478408193 and 2478408202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2478408209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239204119 + 1239204120.

It is an arithmetic number, because the mean of its divisors is an integer number (1239204120).

Almost surely, 2^2478408239 is an apocalyptic number.

2478408239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478408239 is an equidigital number, since it uses as much as digits as its factorization.

2478408239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 2478408239 is about 49783.6141616898. The cubic root of 2478408239 is about 1353.2902349364.

The spelling of 2478408239 in words is "two billion, four hundred seventy-eight million, four hundred eight thousand, two hundred thirty-nine".