90610249 has 2 divisors, whose sum is σ = 90610250. Its totient is φ = 90610248.

The previous prime is 90610243. The next prime is 90610339. The reversal of 90610249 is 94201609.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89170249 + 1440000 = 9443^2 + 1200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90610249 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90610249.

It is not a weakly prime, because it can be changed into another prime (90610243) 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, 45305124 + 45305125.

It is an arithmetic number, because the mean of its divisors is an integer number (45305125).

Almost surely, 2^90610249 is an apocalyptic number.

It is an amenable number.

90610249 is a deficient number, since it is larger than the sum of its proper divisors (1).

90610249 is an equidigital number, since it uses as much as digits as its factorization.

90610249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 90610249 is about 9518.9415903240. The cubic root of 90610249 is about 449.1510727526.

The spelling of 90610249 in words is "ninety million, six hundred ten thousand, two hundred forty-nine".