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8942972989 is a prime number
BaseRepresentation
bin10000101010000101…
…01111000000111101
3212002020210002122211
420111002233000331
5121303400113424
64035222540421
7434421005356
oct102502570075
925066702584
108942972989
11387a090a75
121896b97711
13ac6a045c2
1460ba0cd2d
153751b4b94
hex2150af03d

8942972989 has 2 divisors, whose sum is σ = 8942972990. Its totient is φ = 8942972988.

The previous prime is 8942972981. The next prime is 8942973047. The reversal of 8942972989 is 9892792498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7913525764 + 1029447225 = 88958^2 + 32085^2 .

It is a cyclic number.

It is not a de Polignac number, because 8942972989 - 23 = 8942972981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8942972981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4471486494 + 4471486495.

It is an arithmetic number, because the mean of its divisors is an integer number (4471486495).

Almost surely, 28942972989 is an apocalyptic number.

It is an amenable number.

8942972989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8942972989 is an equidigital number, since it uses as much as digits as its factorization.

8942972989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 67.

The square root of 8942972989 is about 94567.2934422890. The cubic root of 8942972989 is about 2075.6811419610.

The spelling of 8942972989 in words is "eight billion, nine hundred forty-two million, nine hundred seventy-two thousand, nine hundred eighty-nine".