28924979 has 2 divisors, whose sum is σ = 28924980. Its totient is φ = 28924978.

The previous prime is 28924969. The next prime is 28924997. The reversal of 28924979 is 97942982.

Together with next prime (28924997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28924979 - 2⁴ = 28924963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28924969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14462489 + 14462490.

It is an arithmetic number, because the mean of its divisors is an integer number (14462490).

Almost surely, 2^28924979 is an apocalyptic number.

28924979 is a deficient number, since it is larger than the sum of its proper divisors (1).

28924979 is an equidigital number, since it uses as much as digits as its factorization.

28924979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The square root of 28924979 is about 5378.1947714823. The cubic root of 28924979 is about 306.9665247305.

The spelling of 28924979 in words is "twenty-eight million, nine hundred twenty-four thousand, nine hundred seventy-nine".