28905959 has 2 divisors, whose sum is σ = 28905960. Its totient is φ = 28905958.

The previous prime is 28905949. The next prime is 28905971. The reversal of 28905959 is 95950982.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28905959 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28905949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14452979 + 14452980.

It is an arithmetic number, because the mean of its divisors is an integer number (14452980).

Almost surely, 2^28905959 is an apocalyptic number.

28905959 is a deficient number, since it is larger than the sum of its proper divisors (1).

28905959 is an equidigital number, since it uses as much as digits as its factorization.

28905959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 47.

The square root of 28905959 is about 5376.4262293832. The cubic root of 28905959 is about 306.8992266869.

The spelling of 28905959 in words is "twenty-eight million, nine hundred five thousand, nine hundred fifty-nine".