90204337 has 2 divisors, whose sum is σ = 90204338. Its totient is φ = 90204336.

The previous prime is 90204307. The next prime is 90204347. The reversal of 90204337 is 73340209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90041121 + 163216 = 9489^2 + 404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90204337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90204307) 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, 45102168 + 45102169.

It is an arithmetic number, because the mean of its divisors is an integer number (45102169).

Almost surely, 2^90204337 is an apocalyptic number.

It is an amenable number.

90204337 is a deficient number, since it is larger than the sum of its proper divisors (1).

90204337 is an equidigital number, since it uses as much as digits as its factorization.

90204337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 90204337 is about 9497.5963801375. The cubic root of 90204337 is about 448.4793726767.

The spelling of 90204337 in words is "ninety million, two hundred four thousand, three hundred thirty-seven".