90604249 has 2 divisors, whose sum is σ = 90604250. Its totient is φ = 90604248.

The previous prime is 90604201. The next prime is 90604253. The reversal of 90604249 is 94240609.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47610000 + 42994249 = 6900^2 + 6557^2 .

It is an emirp because it is prime and its reverse (94240609) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90604249 is a prime.

It is not a weakly prime, because it can be changed into another prime (90604279) 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, 45302124 + 45302125.

It is an arithmetic number, because the mean of its divisors is an integer number (45302125).

Almost surely, 2^90604249 is an apocalyptic number.

It is an amenable number.

90604249 is a deficient number, since it is larger than the sum of its proper divisors (1).

90604249 is an equidigital number, since it uses as much as digits as its factorization.

90604249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 90604249 is about 9518.6264240173. The cubic root of 90604249 is about 449.1411586206.

The spelling of 90604249 in words is "ninety million, six hundred four thousand, two hundred forty-nine".