90302479 has 2 divisors, whose sum is σ = 90302480. Its totient is φ = 90302478.

The previous prime is 90302447. The next prime is 90302503. The reversal of 90302479 is 97420309.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90302479 - 2⁵ = 90302447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90302579) 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, 45151239 + 45151240.

It is an arithmetic number, because the mean of its divisors is an integer number (45151240).

Almost surely, 2^90302479 is an apocalyptic number.

90302479 is a deficient number, since it is larger than the sum of its proper divisors (1).

90302479 is an equidigital number, since it uses as much as digits as its factorization.

90302479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 90302479 is about 9502.7616512254. The cubic root of 90302479 is about 448.6419617166.

The spelling of 90302479 in words is "ninety million, three hundred two thousand, four hundred seventy-nine".