97859385 has 36 divisors (see below), whose sum is σ = 183118572. Its totient is φ = 48059136.

The previous prime is 97859381. The next prime is 97859387. The reversal of 97859385 is 58395879.

It can be written as a sum of positive squares in 6 ways, for example, as 4717584 + 93141801 = 2172^2 + 9651^2 .

It is not a de Polignac number, because 97859385 - 2² = 97859381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97859381) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 239061 + ... + 239469.

It is an arithmetic number, because the mean of its divisors is an integer number (5086627).

Almost surely, 2^97859385 is an apocalyptic number.

It is an amenable number.

97859385 is a deficient number, since it is larger than the sum of its proper divisors (85259187).

97859385 is a wasteful number, since it uses less digits than its factorization.

97859385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 430 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The square root of 97859385 is about 9892.3902571623. The cubic root of 97859385 is about 460.8230146428.

The spelling of 97859385 in words is "ninety-seven million, eight hundred fifty-nine thousand, three hundred eighty-five".