28959907 has 2 divisors, whose sum is σ = 28959908. Its totient is φ = 28959906.

The previous prime is 28959881. The next prime is 28959913. The reversal of 28959907 is 70995982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28959907 is a prime.

It is not a weakly prime, because it can be changed into another prime (28959947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14479953 + 14479954.

It is an arithmetic number, because the mean of its divisors is an integer number (14479954).

Almost surely, 2^28959907 is an apocalyptic number.

28959907 is a deficient number, since it is larger than the sum of its proper divisors (1).

28959907 is an equidigital number, since it uses as much as digits as its factorization.

28959907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 28959907 is about 5381.4409780281. The cubic root of 28959907 is about 307.0900329047.

The spelling of 28959907 in words is "twenty-eight million, nine hundred fifty-nine thousand, nine hundred seven".