8958221947 has 4 divisors (see below), whose sum is σ = 8958594456. Its totient is φ = 8957849440.

The previous prime is 8958221941. The next prime is 8958221969. The reversal of 8958221947 is 7491228598.

8958221947 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8958221947 - 2³ = 8958221939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8958221941) 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, 147493 + ... + 199174.

It is an arithmetic number, because the mean of its divisors is an integer number (2239648614).

Almost surely, 2^8958221947 is an apocalyptic number.

8958221947 is a deficient number, since it is larger than the sum of its proper divisors (372509).

8958221947 is a wasteful number, since it uses less digits than its factorization.

8958221947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372508.

The product of its digits is 2903040, while the sum is 55.

The square root of 8958221947 is about 94647.8840069867. The cubic root of 8958221947 is about 2076.8602428164.

The spelling of 8958221947 in words is "eight billion, nine hundred fifty-eight million, two hundred twenty-one thousand, nine hundred forty-seven".