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88879897889 = 1012813131669
BaseRepresentation
bin101001011000110100…
…1111001110100100001
322111102012012121212222
41102301221321310201
52424011223213024
6104455244400425
76264345444506
oct1226151716441
9274365177788
1088879897889
113476a426872
1215285846115
1384c5a53873
1444322494ad
1524a2d7485e
hex14b1a79d21

88879897889 has 8 divisors (see below), whose sum is σ = 90079355880. Its totient is φ = 87686704000.

The previous prime is 88879897877. The next prime is 88879897919. The reversal of 88879897889 is 98879897888.

It can be written as a sum of positive squares in 4 ways, for example, as 64461147664 + 24418750225 = 253892^2 + 156265^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-88879897889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88879891889) 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, 1537454 + ... + 1594215.

It is an arithmetic number, because the mean of its divisors is an integer number (11259919485).

Almost surely, 288879897889 is an apocalyptic number.

It is an amenable number.

88879897889 is a deficient number, since it is larger than the sum of its proper divisors (1199457991).

88879897889 is a wasteful number, since it uses less digits than its factorization.

88879897889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132051.

The product of its digits is 9364045824, while the sum is 89.

Subtracting 88879897889 from its reverse (98879897888), we obtain a palindrome (9999999999).

The spelling of 88879897889 in words is "eighty-eight billion, eight hundred seventy-nine million, eight hundred ninety-seven thousand, eight hundred eighty-nine".

Divisors: 1 101 281 28381 3131669 316298569 879998989 88879897889