28476439 has 2 divisors, whose sum is σ = 28476440. Its totient is φ = 28476438.

The previous prime is 28476403. The next prime is 28476473. The reversal of 28476439 is 93467482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28476439 - 2⁷ = 28476311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28476395 and 28476404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28476739) 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 as a sum of consecutive naturals, namely, 14238219 + 14238220.

It is an arithmetic number, because the mean of its divisors is an integer number (14238220).

Almost surely, 2^28476439 is an apocalyptic number.

28476439 is a deficient number, since it is larger than the sum of its proper divisors (1).

28476439 is an equidigital number, since it uses as much as digits as its factorization.

28476439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 43.

The square root of 28476439 is about 5336.3319799278. The cubic root of 28476439 is about 305.3715404104.

The spelling of 28476439 in words is "twenty-eight million, four hundred seventy-six thousand, four hundred thirty-nine".