28959913 has 2 divisors, whose sum is σ = 28959914. Its totient is φ = 28959912.

The previous prime is 28959907. The next prime is 28959919. The reversal of 28959913 is 31995982.

It is a balanced prime because it is at equal distance from previous prime (28959907) and next prime (28959919).

It can be written as a sum of positive squares in only one way, i.e., 28164249 + 795664 = 5307^2 + 892^2 .

It is a cyclic number.

It is not a de Polignac number, because 28959913 - 2⁵ = 28959881 is a prime.

It is not a weakly prime, because it can be changed into another prime (28959919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14479956 + 14479957.

It is an arithmetic number, because the mean of its divisors is an integer number (14479957).

Almost surely, 2^28959913 is an apocalyptic number.

It is an amenable number.

28959913 is a deficient number, since it is larger than the sum of its proper divisors (1).

28959913 is an equidigital number, since it uses as much as digits as its factorization.

28959913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 46.

The square root of 28959913 is about 5381.4415354996. The cubic root of 28959913 is about 307.0900541127.

The spelling of 28959913 in words is "twenty-eight million, nine hundred fifty-nine thousand, nine hundred thirteen".