97158947 has 4 divisors (see below), whose sum is σ = 97273176. Its totient is φ = 97044720.

The previous prime is 97158931. The next prime is 97158949. The reversal of 97158947 is 74985179.

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 97158947 - 2⁴ = 97158931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97158895 and 97158904.

It is not an unprimeable number, because it can be changed into a prime (97158949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55829 + ... + 57542.

It is an arithmetic number, because the mean of its divisors is an integer number (24318294).

Almost surely, 2^97158947 is an apocalyptic number.

97158947 is a deficient number, since it is larger than the sum of its proper divisors (114229).

97158947 is a wasteful number, since it uses less digits than its factorization.

97158947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114228.

The product of its digits is 635040, while the sum is 50.

The square root of 97158947 is about 9856.9238101956. The cubic root of 97158947 is about 459.7209192485.

The spelling of 97158947 in words is "ninety-seven million, one hundred fifty-eight thousand, nine hundred forty-seven".