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8886211997 = 131016767869
BaseRepresentation
bin10000100011010100…
…01101010110011101
3211221021222100012212
420101222031112131
5121144332240442
64025434210205
7433131361415
oct102152152635
924837870185
108886211997
113850042663
12187bb83965
13ab801ca10
14604275645
15370201a82
hex211a8d59d

8886211997 has 8 divisors (see below), whose sum is σ = 9664518360. Its totient is φ = 8121441600.

The previous prime is 8886211993. The next prime is 8886212003. The reversal of 8886211997 is 7991126888.

It can be written as a sum of positive squares in 4 ways, for example, as 1141155961 + 7745056036 = 33781^2 + 88006^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8886211997 - 22 = 8886211993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8886211991) 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, 3382622 + ... + 3385247.

It is an arithmetic number, because the mean of its divisors is an integer number (1208064795).

Almost surely, 28886211997 is an apocalyptic number.

It is an amenable number.

8886211997 is a deficient number, since it is larger than the sum of its proper divisors (778306363).

8886211997 is a wasteful number, since it uses less digits than its factorization.

8886211997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767983.

The product of its digits is 3483648, while the sum is 59.

The square root of 8886211997 is about 94266.7067261820. The cubic root of 8886211997 is about 2071.2803732877.

The spelling of 8886211997 in words is "eight billion, eight hundred eighty-six million, two hundred eleven thousand, nine hundred ninety-seven".

Divisors: 1 13 101 1313 6767869 87982297 683554769 8886211997