90209313 has 24 divisors (see below), whose sum is σ = 133999008. Its totient is φ = 58447872.

The previous prime is 90209311. The next prime is 90209323. The reversal of 90209313 is 31390209.

It is not a de Polignac number, because 90209313 - 2¹ = 90209311 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90209311) 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 in 23 ways as a sum of consecutive naturals, for example, 99006 + ... + 99912.

It is an arithmetic number, because the mean of its divisors is an integer number (5583292).

Almost surely, 2^90209313 is an apocalyptic number.

It is an amenable number.

90209313 is a deficient number, since it is larger than the sum of its proper divisors (43789695).

90209313 is a wasteful number, since it uses less digits than its factorization.

90209313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213 (or 1210 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 90209313 is about 9497.8583375412. The cubic root of 90209313 is about 448.4876191107.

The spelling of 90209313 in words is "ninety million, two hundred nine thousand, three hundred thirteen".