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89880389 = 236164063
BaseRepresentation
bin1010101101101…
…11011101000101
320021010101201022
411112313131011
5141002133024
612530240525
72140653644
oct526673505
9207111638
1089880389
114680a515
1226126145
131580c681
14bd1935b
157d5635e
hex55b7745

89880389 has 8 divisors (see below), whose sum is σ = 95327232. Its totient is φ = 84561840.

The previous prime is 89880383. The next prime is 89880407. The reversal of 89880389 is 98308898.

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-89880389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89880389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89880383) 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, 30629 + ... + 33434.

It is an arithmetic number, because the mean of its divisors is an integer number (11915904).

Almost surely, 289880389 is an apocalyptic number.

It is an amenable number.

89880389 is a deficient number, since it is larger than the sum of its proper divisors (5446843).

89880389 is a wasteful number, since it uses less digits than its factorization.

89880389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64147.

The product of its (nonzero) digits is 995328, while the sum is 53.

The square root of 89880389 is about 9480.5268313528. The cubic root of 89880389 is about 447.9418587521.

The spelling of 89880389 in words is "eighty-nine million, eight hundred eighty thousand, three hundred eighty-nine".

Divisors: 1 23 61 1403 64063 1473449 3907843 89880389