9897147427 has 8 divisors (see below), whose sum is σ = 10165936016. Its totient is φ = 9628427232.

The previous prime is 9897147383. The next prime is 9897147433. The reversal of 9897147427 is 7247417989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9897147427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9897147437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438808 + ... + 460810.

It is an arithmetic number, because the mean of its divisors is an integer number (1270742002).

Almost surely, 2^9897147427 is an apocalyptic number.

9897147427 is a deficient number, since it is larger than the sum of its proper divisors (268788589).

9897147427 is a wasteful number, since it uses less digits than its factorization.

9897147427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34197.

The product of its digits is 7112448, while the sum is 58.

The square root of 9897147427 is about 99484.4079592375. The cubic root of 9897147427 is about 2147.0229159435.

The spelling of 9897147427 in words is "nine billion, eight hundred ninety-seven million, one hundred forty-seven thousand, four hundred twenty-seven".