97989079 has 4 divisors (see below), whose sum is σ = 98270200. Its totient is φ = 97707960.

The previous prime is 97989077. The next prime is 97989083. The reversal of 97989079 is 97098979.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97989079 - 2¹ = 97989077 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 (97989077) by changing a digit.

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, 140037 + ... + 140734.

It is an arithmetic number, because the mean of its divisors is an integer number (24567550).

Almost surely, 2^97989079 is an apocalyptic number.

97989079 is a deficient number, since it is larger than the sum of its proper divisors (281121).

97989079 is a wasteful number, since it uses less digits than its factorization.

97989079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281120.

The product of its (nonzero) digits is 2571912, while the sum is 58.

The square root of 97989079 is about 9898.9433274466. The cubic root of 97989079 is about 461.0265025238.

The spelling of 97989079 in words is "ninety-seven million, nine hundred eighty-nine thousand, seventy-nine".