97816789 has 24 divisors (see below), whose sum is σ = 117934368. Its totient is φ = 80831520.

The previous prime is 97816757. The next prime is 97816799. The reversal of 97816789 is 98761879.

It is not a de Polignac number, because 97816789 - 2⁵ = 97816757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97816799) 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 23 ways as a sum of consecutive naturals, for example, 295354 + ... + 295684.

It is an arithmetic number, because the mean of its divisors is an integer number (4913932).

Almost surely, 2^97816789 is an apocalyptic number.

It is an amenable number.

97816789 is a deficient number, since it is larger than the sum of its proper divisors (20117579).

97816789 is a wasteful number, since it uses less digits than its factorization.

97816789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 538 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 55.

The square root of 97816789 is about 9890.2370547930. The cubic root of 97816789 is about 460.7561429579.

The spelling of 97816789 in words is "ninety-seven million, eight hundred sixteen thousand, seven hundred eighty-nine".