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989121 = 37193767
BaseRepresentation
bin11110001011111000001
31212020211010
43301133001
5223122441
633111133
711256510
oct3613701
91766733
10989121
11616161
123b84a9
132882a3
141ba677
15148116
hexf17c1

989121 has 32 divisors (see below), whose sum is σ = 1653760. Its totient is φ = 513216.

The previous prime is 989119. The next prime is 989123. The reversal of 989121 is 121989.

989121 is nontrivially palindromic in base 6.

989121 is a nontrivial binomial coefficient, being equal to C(1407, 2).

It is an interprime number because it is at equal distance from previous prime (989119) and next prime (989123).

It is not a de Polignac number, because 989121 - 21 = 989119 is a prime.

989121 is an undulating number in base 11.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (989123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14730 + ... + 14796.

It is an arithmetic number, because the mean of its divisors is an integer number (51680).

2989121 is an apocalyptic number.

989121 is the 1406-th triangular number.

It is an amenable number.

989121 is a deficient number, since it is larger than the sum of its proper divisors (664639).

989121 is a wasteful number, since it uses less digits than its factorization.

989121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133.

The product of its digits is 1296, while the sum is 30.

The square root of 989121 is about 994.5456248961. The cubic root of 989121 is about 99.6360436313.

The spelling of 989121 in words is "nine hundred eighty-nine thousand, one hundred twenty-one".

Divisors: 1 3 7 19 21 37 57 67 111 133 201 259 399 469 703 777 1273 1407 2109 2479 3819 4921 7437 8911 14763 17353 26733 47101 52059 141303 329707 989121