97799609 has 2 divisors, whose sum is σ = 97799610. Its totient is φ = 97799608.

The previous prime is 97799573. The next prime is 97799651. The reversal of 97799609 is 90699779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84695209 + 13104400 = 9203^2 + 3620^2 .

It is a cyclic number.

It is not a de Polignac number, because 97799609 - 2²⁰ = 96751033 is a prime.

It is not a weakly prime, because it can be changed into another prime (97799909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48899804 + 48899805.

It is an arithmetic number, because the mean of its divisors is an integer number (48899805).

Almost surely, 2^97799609 is an apocalyptic number.

It is an amenable number.

97799609 is a deficient number, since it is larger than the sum of its proper divisors (1).

97799609 is an equidigital number, since it uses as much as digits as its factorization.

97799609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1928934, while the sum is 56.

The square root of 97799609 is about 9889.3684833765. The cubic root of 97799609 is about 460.7291664913.

The spelling of 97799609 in words is "ninety-seven million, seven hundred ninety-nine thousand, six hundred nine".