28473899 has 2 divisors, whose sum is σ = 28473900. Its totient is φ = 28473898.

The previous prime is 28473889. The next prime is 28473901. The reversal of 28473899 is 99837482.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28473899 - 2²⁰ = 27425323 is a prime.

Together with 28473901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28473829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14236949 + 14236950.

It is an arithmetic number, because the mean of its divisors is an integer number (14236950).

Almost surely, 2^28473899 is an apocalyptic number.

28473899 is a deficient number, since it is larger than the sum of its proper divisors (1).

28473899 is an equidigital number, since it uses as much as digits as its factorization.

28473899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The square root of 28473899 is about 5336.0939834302. The cubic root of 28473899 is about 305.3624607782.

The spelling of 28473899 in words is "twenty-eight million, four hundred seventy-three thousand, eight hundred ninety-nine".