97995439 has 4 divisors (see below), whose sum is σ = 98148960. Its totient is φ = 97841920.

The previous prime is 97995431. The next prime is 97995449. The reversal of 97995439 is 93459979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93459979 = 109 ⋅857431.

It is a cyclic number.

It is not a de Polignac number, because 97995439 - 2³ = 97995431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97995439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97995431) 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, 75799 + ... + 77080.

It is an arithmetic number, because the mean of its divisors is an integer number (24537240).

Almost surely, 2^97995439 is an apocalyptic number.

97995439 is a deficient number, since it is larger than the sum of its proper divisors (153521).

97995439 is a wasteful number, since it uses less digits than its factorization.

97995439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153520.

The product of its digits is 2755620, while the sum is 55.

The square root of 97995439 is about 9899.2645686435. The cubic root of 97995439 is about 461.0364766459.

The spelling of 97995439 in words is "ninety-seven million, nine hundred ninety-five thousand, four hundred thirty-nine".