90769807 has 2 divisors, whose sum is σ = 90769808. Its totient is φ = 90769806.

The previous prime is 90769793. The next prime is 90769841. The reversal of 90769807 is 70896709.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90769807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90769207) 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, 45384903 + 45384904.

It is an arithmetic number, because the mean of its divisors is an integer number (45384904).

Almost surely, 2^90769807 is an apocalyptic number.

90769807 is a deficient number, since it is larger than the sum of its proper divisors (1).

90769807 is an equidigital number, since it uses as much as digits as its factorization.

90769807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 90769807 is about 9527.3189827989. The cubic root of 90769807 is about 449.4145588475.

The spelling of 90769807 in words is "ninety million, seven hundred sixty-nine thousand, eight hundred seven".