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89190769 = 1923320147
BaseRepresentation
bin1010101000011…
…11000101110001
320012211100201211
411110033011301
5140313101034
612503400121
72132052253
oct524170561
9205740654
1089190769
1146389388
1225a53041
131562a805
14bbb9cd3
157c6bd64
hex550f171

89190769 has 8 divisors (see below), whose sum is σ = 94292640. Its totient is φ = 84129696.

The previous prime is 89190767. The next prime is 89190781. The reversal of 89190769 is 96709198.

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 89190769 - 21 = 89190767 is a prime.

It is a super-2 number, since 2×891907692 = 15909986549622722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89190767) 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 7 ways as a sum of consecutive naturals, for example, 5647 + ... + 14500.

It is an arithmetic number, because the mean of its divisors is an integer number (11786580).

Almost surely, 289190769 is an apocalyptic number.

It is an amenable number.

89190769 is a deficient number, since it is larger than the sum of its proper divisors (5101871).

89190769 is a wasteful number, since it uses less digits than its factorization.

89190769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20399.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 89190769 is about 9444.0864566140. The cubic root of 89190769 is about 446.7932837622.

The spelling of 89190769 in words is "eighty-nine million, one hundred ninety thousand, seven hundred sixty-nine".

Divisors: 1 19 233 4427 20147 382793 4694251 89190769