90796221 has 28 divisors (see below), whose sum is σ = 138504960. Its totient is φ = 59476680.

The previous prime is 90796219. The next prime is 90796229. The reversal of 90796221 is 12269709.

It is not a de Polignac number, because 90796221 - 2¹ = 90796219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90796229) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 41956 + ... + 44066.

Almost surely, 2^90796221 is an apocalyptic number.

It is an amenable number.

90796221 is a deficient number, since it is larger than the sum of its proper divisors (47708739).

90796221 is an equidigital number, since it uses as much as digits as its factorization.

90796221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188 (or 2173 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 90796221 is about 9528.7051061516. The cubic root of 90796221 is about 449.4581478090.

The spelling of 90796221 in words is "ninety million, seven hundred ninety-six thousand, two hundred twenty-one".