90136337 has 2 divisors, whose sum is σ = 90136338. Its totient is φ = 90136336.

The previous prime is 90136331. The next prime is 90136381. The reversal of 90136337 is 73363109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54184321 + 35952016 = 7361^2 + 5996^2 .

It is a cyclic number.

It is not a de Polignac number, because 90136337 - 2¹⁰ = 90135313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90136331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45068168 + 45068169.

It is an arithmetic number, because the mean of its divisors is an integer number (45068169).

Almost surely, 2^90136337 is an apocalyptic number.

It is an amenable number.

90136337 is a deficient number, since it is larger than the sum of its proper divisors (1).

90136337 is an equidigital number, since it uses as much as digits as its factorization.

90136337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 32.

The square root of 90136337 is about 9494.0158521039. The cubic root of 90136337 is about 448.3666498491.

The spelling of 90136337 in words is "ninety million, one hundred thirty-six thousand, three hundred thirty-seven".