97935775397 has 4 divisors (see below), whose sum is σ = 99397503456. Its totient is φ = 96474047340.

The previous prime is 97935775351. The next prime is 97935775411. The reversal of 97935775397 is 79357753979.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97935775397 is a prime.

It is a super-2 number, since 2×97935775397² (a number of 23 digits) contains 22 as substring.

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 97935775397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97935775897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730863929 + ... + 730864062.

It is an arithmetic number, because the mean of its divisors is an integer number (24849375864).

Almost surely, 2^97935775397 is an apocalyptic number.

It is an amenable number.

97935775397 is a deficient number, since it is larger than the sum of its proper divisors (1461728059).

97935775397 is a wasteful number, since it uses less digits than its factorization.

97935775397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461728058.

The product of its digits is 393824025, while the sum is 71.

The spelling of 97935775397 in words is "ninety-seven billion, nine hundred thirty-five million, seven hundred seventy-five thousand, three hundred ninety-seven".