8947642901 has 4 divisors (see below), whose sum is σ = 8949175404. Its totient is φ = 8946110400.

The previous prime is 8947642859. The next prime is 8947642927. The reversal of 8947642901 is 1092467498.

8947642901 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 can be written as a sum of positive squares in 2 ways, for example, as 1720092676 + 7227550225 = 41474^2 + 85015^2 .

It is a cyclic number.

It is not a de Polignac number, because 8947642901 - 2¹⁰ = 8947641877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8947642901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8947642961) 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, 757460 + ... + 769181.

It is an arithmetic number, because the mean of its divisors is an integer number (2237293851).

Almost surely, 2^8947642901 is an apocalyptic number.

It is an amenable number.

8947642901 is a deficient number, since it is larger than the sum of its proper divisors (1532503).

8947642901 is a wasteful number, since it uses less digits than its factorization.

8947642901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532502.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 8947642901 is about 94591.9811664815. The cubic root of 8947642901 is about 2076.0423775942.

The spelling of 8947642901 in words is "eight billion, nine hundred forty-seven million, six hundred forty-two thousand, nine hundred one".