816971098 has 8 divisors (see below), whose sum is σ = 1228249440. Its totient is φ = 407554620.

The previous prime is 816971087. The next prime is 816971107. The reversal of 816971098 is 890179618.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464368 + ... + 466123.

It is an arithmetic number, because the mean of its divisors is an integer number (153531180).

Almost surely, 2^816971098 is an apocalyptic number.

816971098 is a deficient number, since it is larger than the sum of its proper divisors (411278342).

816971098 is a wasteful number, since it uses less digits than its factorization.

816971098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930932.

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 816971098 is about 28582.7062749488. The cubic root of 816971098 is about 934.8362922702.

The spelling of 816971098 in words is "eight hundred sixteen million, nine hundred seventy-one thousand, ninety-eight".