97928671 has 4 divisors (see below), whose sum is σ = 97976512. Its totient is φ = 97880832.

The previous prime is 97928669. The next prime is 97928707. The reversal of 97928671 is 17682979.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17682979 = 101 ⋅175079.

It is a 8-Lehmer number, since φ(97928671) divides (97928671-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 97928671 - 2¹ = 97928669 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 (97928371) 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, 20706 + ... + 24991.

It is an arithmetic number, because the mean of its divisors is an integer number (24494128).

Almost surely, 2^97928671 is an apocalyptic number.

97928671 is a deficient number, since it is larger than the sum of its proper divisors (47841).

97928671 is a wasteful number, since it uses less digits than its factorization.

97928671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47840.

The product of its digits is 381024, while the sum is 49.

The square root of 97928671 is about 9895.8916222845. The cubic root of 97928671 is about 460.9317456587.

The spelling of 97928671 in words is "ninety-seven million, nine hundred twenty-eight thousand, six hundred seventy-one".