90013229 has 2 divisors, whose sum is σ = 90013230. Its totient is φ = 90013228.

The previous prime is 90013223. The next prime is 90013309. The reversal of 90013229 is 92231009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88868329 + 1144900 = 9427^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 90013229 - 2⁴ = 90013213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90013198 and 90013207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90013223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45006614 + 45006615.

It is an arithmetic number, because the mean of its divisors is an integer number (45006615).

Almost surely, 2^90013229 is an apocalyptic number.

It is an amenable number.

90013229 is a deficient number, since it is larger than the sum of its proper divisors (1).

90013229 is an equidigital number, since it uses as much as digits as its factorization.

90013229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 90013229 is about 9487.5301844052. The cubic root of 90013229 is about 448.1624308035.

The spelling of 90013229 in words is "ninety million, thirteen thousand, two hundred twenty-nine".