90213211 has 8 divisors (see below), whose sum is σ = 99286704. Its totient is φ = 81285120.

The previous prime is 90213191. The next prime is 90213223. The reversal of 90213211 is 11231209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90213211 - 2⁹ = 90212699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90213241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35046 + ... + 37531.

It is an arithmetic number, because the mean of its divisors is an integer number (12410838).

Almost surely, 2^90213211 is an apocalyptic number.

90213211 is a deficient number, since it is larger than the sum of its proper divisors (9073493).

90213211 is a wasteful number, since it uses less digits than its factorization.

90213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72701.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 90213211 is about 9498.0635394800. The cubic root of 90213211 is about 448.4940788264.

The spelling of 90213211 in words is "ninety million, two hundred thirteen thousand, two hundred eleven".