28486979 has 2 divisors, whose sum is σ = 28486980. Its totient is φ = 28486978.

The previous prime is 28486973. The next prime is 28486987. The reversal of 28486979 is 97968482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28486979 - 2¹⁶ = 28421443 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28486979.

It is not a weakly prime, because it can be changed into another prime (28486973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14243489 + 14243490.

It is an arithmetic number, because the mean of its divisors is an integer number (14243490).

Almost surely, 2^28486979 is an apocalyptic number.

28486979 is a deficient number, since it is larger than the sum of its proper divisors (1).

28486979 is an equidigital number, since it uses as much as digits as its factorization.

28486979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 53.

The square root of 28486979 is about 5337.3194583049. The cubic root of 28486979 is about 305.4092115417.

The spelling of 28486979 in words is "twenty-eight million, four hundred eighty-six thousand, nine hundred seventy-nine".