97809859 has 8 divisors (see below), whose sum is σ = 112008960. Its totient is φ = 83667336.

The previous prime is 97809851. The next prime is 97809863. The reversal of 97809859 is 95890879.

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 97809859 - 2³ = 97809851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97809851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10369 + ... + 17410.

It is an arithmetic number, because the mean of its divisors is an integer number (14001120).

Almost surely, 2^97809859 is an apocalyptic number.

97809859 is a deficient number, since it is larger than the sum of its proper divisors (14199101).

97809859 is a wasteful number, since it uses less digits than its factorization.

97809859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28289.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The square root of 97809859 is about 9889.8867030922. The cubic root of 97809859 is about 460.7452616783.

The spelling of 97809859 in words is "ninety-seven million, eight hundred nine thousand, eight hundred fifty-nine".