90284737 has 2 divisors, whose sum is σ = 90284738. Its totient is φ = 90284736.

The previous prime is 90284731. The next prime is 90284771. The reversal of 90284737 is 73748209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62869041 + 27415696 = 7929^2 + 5236^2 .

It is a cyclic number.

It is not a de Polignac number, because 90284737 - 2⁷ = 90284609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90284737.

It is not a weakly prime, because it can be changed into another prime (90284731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45142368 + 45142369.

It is an arithmetic number, because the mean of its divisors is an integer number (45142369).

Almost surely, 2^90284737 is an apocalyptic number.

It is an amenable number.

90284737 is a deficient number, since it is larger than the sum of its proper divisors (1).

90284737 is an equidigital number, since it uses as much as digits as its factorization.

90284737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 90284737 is about 9501.8280872683. The cubic root of 90284737 is about 448.6125777797.

The spelling of 90284737 in words is "ninety million, two hundred eighty-four thousand, seven hundred thirty-seven".