28867492949 has 2 divisors, whose sum is σ = 28867492950. Its totient is φ = 28867492948.

The previous prime is 28867492903. The next prime is 28867492967. The reversal of 28867492949 is 94929476882.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20339893924 + 8527599025 = 142618^2 + 92345^2 .

It is a cyclic number.

It is not a de Polignac number, because 28867492949 - 2²⁸ = 28599057493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28867492249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14433746474 + 14433746475.

It is an arithmetic number, because the mean of its divisors is an integer number (14433746475).

Almost surely, 2^28867492949 is an apocalyptic number.

It is an amenable number.

28867492949 is a deficient number, since it is larger than the sum of its proper divisors (1).

28867492949 is an equidigital number, since it uses as much as digits as its factorization.

28867492949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125411328, while the sum is 68.

The spelling of 28867492949 in words is "twenty-eight billion, eight hundred sixty-seven million, four hundred ninety-two thousand, nine hundred forty-nine".