8949591897 has 4 divisors (see below), whose sum is σ = 11932789200. Its totient is φ = 5966394596.

The previous prime is 8949591863. The next prime is 8949591901. The reversal of 8949591897 is 7981959498.

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 not a de Polignac number, because 8949591897 - 2¹⁶ = 8949526361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8949591697) 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, 1491598647 + ... + 1491598652.

It is an arithmetic number, because the mean of its divisors is an integer number (2983197300).

Almost surely, 2^8949591897 is an apocalyptic number.

It is an amenable number.

8949591897 is a deficient number, since it is larger than the sum of its proper divisors (2983197303).

8949591897 is a wasteful number, since it uses less digits than its factorization.

8949591897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983197302.

The product of its digits is 58786560, while the sum is 69.

The square root of 8949591897 is about 94602.2827261584. The cubic root of 8949591897 is about 2076.1931027474.

The spelling of 8949591897 in words is "eight billion, nine hundred forty-nine million, five hundred ninety-one thousand, eight hundred ninety-seven".