28941779 has 2 divisors, whose sum is σ = 28941780. Its totient is φ = 28941778.

The previous prime is 28941767. The next prime is 28941823. The reversal of 28941779 is 97714982.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28941779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28941749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14470889 + 14470890.

It is an arithmetic number, because the mean of its divisors is an integer number (14470890).

Almost surely, 2^28941779 is an apocalyptic number.

28941779 is a deficient number, since it is larger than the sum of its proper divisors (1).

28941779 is an equidigital number, since it uses as much as digits as its factorization.

28941779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 47.

The square root of 28941779 is about 5379.7564071248. The cubic root of 28941779 is about 307.0259432641.

The spelling of 28941779 in words is "twenty-eight million, nine hundred forty-one thousand, seven hundred seventy-nine".