28949953 has 2 divisors, whose sum is σ = 28949954. Its totient is φ = 28949952.

The previous prime is 28949927. The next prime is 28949957. The reversal of 28949953 is 35994982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14684224 + 14265729 = 3832^2 + 3777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28949953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28949897 and 28949906.

It is not a weakly prime, because it can be changed into another prime (28949957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14474976 + 14474977.

It is an arithmetic number, because the mean of its divisors is an integer number (14474977).

Almost surely, 2^28949953 is an apocalyptic number.

It is an amenable number.

28949953 is a deficient number, since it is larger than the sum of its proper divisors (1).

28949953 is an equidigital number, since it uses as much as digits as its factorization.

28949953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 49.

The square root of 28949953 is about 5380.5160533168. The cubic root of 28949953 is about 307.0548448949.

The spelling of 28949953 in words is "twenty-eight million, nine hundred forty-nine thousand, nine hundred fifty-three".