28609499 has 2 divisors, whose sum is σ = 28609500. Its totient is φ = 28609498.

The previous prime is 28609489. The next prime is 28609507. The reversal of 28609499 is 99490682.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28609499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28609409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14304749 + 14304750.

It is an arithmetic number, because the mean of its divisors is an integer number (14304750).

Almost surely, 2^28609499 is an apocalyptic number.

28609499 is a deficient number, since it is larger than the sum of its proper divisors (1).

28609499 is an equidigital number, since it uses as much as digits as its factorization.

28609499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 28609499 is about 5348.7848152641. The cubic root of 28609499 is about 305.8464314086.

The spelling of 28609499 in words is "twenty-eight million, six hundred nine thousand, four hundred ninety-nine".