821436098 has 24 divisors (see below), whose sum is σ = 1446025932. Its totient is φ = 348923904.

The previous prime is 821436079. The next prime is 821436151. The reversal of 821436098 is 890634128.

821436098 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 700502089 + 120934009 = 26467^2 + 10997^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26015 + ... + 48162.

Almost surely, 2^821436098 is an apocalyptic number.

821436098 is a deficient number, since it is larger than the sum of its proper divisors (624589834).

821436098 is a wasteful number, since it uses less digits than its factorization.

821436098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74306 (or 74299 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 821436098 is about 28660.7065160648. The cubic root of 821436098 is about 936.5362556724.

The spelling of 821436098 in words is "eight hundred twenty-one million, four hundred thirty-six thousand, ninety-eight".