90990827 has 2 divisors, whose sum is σ = 90990828. Its totient is φ = 90990826.

The previous prime is 90990821. The next prime is 90990839. The reversal of 90990827 is 72809909.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90990827 - 2⁴ = 90990811 is a prime.

It is not a weakly prime, because it can be changed into another prime (90990821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45495413 + 45495414.

It is an arithmetic number, because the mean of its divisors is an integer number (45495414).

Almost surely, 2^90990827 is an apocalyptic number.

90990827 is a deficient number, since it is larger than the sum of its proper divisors (1).

90990827 is an equidigital number, since it uses as much as digits as its factorization.

90990827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 90990827 is about 9538.9112062122. The cubic root of 90990827 is about 449.7790306069.

The spelling of 90990827 in words is "ninety million, nine hundred ninety thousand, eight hundred twenty-seven".