28944859 has 2 divisors, whose sum is σ = 28944860. Its totient is φ = 28944858.

The previous prime is 28944827. The next prime is 28944901. The reversal of 28944859 is 95844982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28944859 - 2⁵ = 28944827 is a prime.

It is not a weakly prime, because it can be changed into another prime (28944259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14472429 + 14472430.

It is an arithmetic number, because the mean of its divisors is an integer number (14472430).

Almost surely, 2^28944859 is an apocalyptic number.

28944859 is a deficient number, since it is larger than the sum of its proper divisors (1).

28944859 is an equidigital number, since it uses as much as digits as its factorization.

28944859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 49.

The square root of 28944859 is about 5380.0426578234. The cubic root of 28944859 is about 307.0368341676.

The spelling of 28944859 in words is "twenty-eight million, nine hundred forty-four thousand, eight hundred fifty-nine".