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89231899 = 271329269
BaseRepresentation
bin1010101000110…
…01001000011011
320012220110011011
411110121020123
5140320410044
612504314351
72132313211
oct524311033
9205813134
1089231899
1146407279
1225a729b7
1315643453
14bbcacb1
157c79134
hex551921b

89231899 has 4 divisors (see below), whose sum is σ = 89561440. Its totient is φ = 88902360.

The previous prime is 89231893. The next prime is 89231903. The reversal of 89231899 is 99813298.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-89231899 is a prime.

It is a cake number, because a cake can be divided into 89231899 parts by 812 planar cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89231893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164364 + ... + 164905.

It is an arithmetic number, because the mean of its divisors is an integer number (22390360).

Almost surely, 289231899 is an apocalyptic number.

89231899 is a deficient number, since it is larger than the sum of its proper divisors (329541).

89231899 is a wasteful number, since it uses less digits than its factorization.

89231899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329540.

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

The square root of 89231899 is about 9446.2637587567. The cubic root of 89231899 is about 446.8619522426.

The spelling of 89231899 in words is "eighty-nine million, two hundred thirty-one thousand, eight hundred ninety-nine".

Divisors: 1 271 329269 89231899