7928863 has 2 divisors, whose sum is σ = 7928864. Its totient is φ = 7928862.

The previous prime is 7928857. The next prime is 7928881. The reversal of 7928863 is 3688297.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7928863 - 2⁵ = 7928831 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7928363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3964431 + 3964432.

It is an arithmetic number, because the mean of its divisors is an integer number (3964432).

Almost surely, 2^7928863 is an apocalyptic number.

7928863 is a deficient number, since it is larger than the sum of its proper divisors (1).

7928863 is an equidigital number, since it uses as much as digits as its factorization.

7928863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 7928863 is about 2815.8236805596. The cubic root of 7928863 is about 199.4054258260.

The spelling of 7928863 in words is "seven million, nine hundred twenty-eight thousand, eight hundred sixty-three".