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69890089 = 3114915131
BaseRepresentation
bin1000010101001…
…11000000101001
311212111210011211
410022213000221
5120342440324
610533553121
71506025123
oct412470051
9155453154
1069890089
11364a6505
121b4a57a1
13116307a9
1493d4213
156208294
hex42a7029

69890089 has 8 divisors (see below), whose sum is σ = 72633600. Its totient is φ = 67177200.

The previous prime is 69890071. The next prime is 69890099. The reversal of 69890089 is 98009896.

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 69890089 - 213 = 69881897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69890069) 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, 2947 + ... + 12184.

It is an arithmetic number, because the mean of its divisors is an integer number (9079200).

Almost surely, 269890089 is an apocalyptic number.

It is an amenable number.

69890089 is a deficient number, since it is larger than the sum of its proper divisors (2743511).

69890089 is a wasteful number, since it uses less digits than its factorization.

69890089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15311.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 69890089 is about 8360.0292463603. The cubic root of 69890089 is about 411.9127148018.

The spelling of 69890089 in words is "sixty-nine million, eight hundred ninety thousand, eighty-nine".

Divisors: 1 31 149 4619 15131 469061 2254519 69890089