90821096 has 8 divisors (see below), whose sum is σ = 170289570. Its totient is φ = 45410544.

The previous prime is 90821057. The next prime is 90821147. The reversal of 90821096 is 69012809.

It can be written as a sum of positive squares in only one way, i.e., 90820900 + 196 = 9530^2 + 14^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5676311 + ... + 5676326.

Almost surely, 2^90821096 is an apocalyptic number.

It is an amenable number.

90821096 is a deficient number, since it is larger than the sum of its proper divisors (79468474).

90821096 is a wasteful number, since it uses less digits than its factorization.

90821096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11352643 (or 11352639 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 90821096 is about 9530.0102833103. The cubic root of 90821096 is about 449.4991893504.

The spelling of 90821096 in words is "ninety million, eight hundred twenty-one thousand, ninety-six".