90006779 has 2 divisors, whose sum is σ = 90006780. Its totient is φ = 90006778.

The previous prime is 90006703. The next prime is 90006793. The reversal of 90006779 is 97760009.

It is a strong prime.

It is an emirp because it is prime and its reverse (97760009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90006779 - 2⁸ = 90006523 is a prime.

It is not a weakly prime, because it can be changed into another prime (90006799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45003389 + 45003390.

It is an arithmetic number, because the mean of its divisors is an integer number (45003390).

Almost surely, 2^90006779 is an apocalyptic number.

90006779 is a deficient number, since it is larger than the sum of its proper divisors (1).

90006779 is an equidigital number, since it uses as much as digits as its factorization.

90006779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 90006779 is about 9487.1902584485. The cubic root of 90006779 is about 448.1517260187.

The spelling of 90006779 in words is "ninety million, six thousand, seven hundred seventy-nine".