78929233 has 2 divisors, whose sum is σ = 78929234. Its totient is φ = 78929232.

The previous prime is 78929183. The next prime is 78929237. The reversal of 78929233 is 33292987.

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., 76597504 + 2331729 = 8752^2 + 1527^2 .

It is a cyclic number.

It is not a de Polignac number, because 78929233 - 2²¹ = 76832081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78929233.

It is not a weakly prime, because it can be changed into another prime (78929237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39464616 + 39464617.

It is an arithmetic number, because the mean of its divisors is an integer number (39464617).

Almost surely, 2^78929233 is an apocalyptic number.

It is an amenable number.

78929233 is a deficient number, since it is larger than the sum of its proper divisors (1).

78929233 is an equidigital number, since it uses as much as digits as its factorization.

78929233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 78929233 is about 8884.2125706221. The cubic root of 78929233 is about 428.9558821043.

The spelling of 78929233 in words is "seventy-eight million, nine hundred twenty-nine thousand, two hundred thirty-three".