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112909 is a prime number
BaseRepresentation
bin11011100100001101
312201212211
4123210031
512103114
62230421
7650116
oct334415
9181784
10112909
1177915
1255411
133c514
142d20d
15236c4
hex1b90d

112909 has 2 divisors, whose sum is σ = 112910. Its totient is φ = 112908.

The previous prime is 112901. The next prime is 112913. The reversal of 112909 is 909211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81225 + 31684 = 285^2 + 178^2 .

It is a cyclic number.

It is not a de Polignac number, because 112909 - 23 = 112901 is a prime.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 112909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112901) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56454 + 56455.

It is an arithmetic number, because the mean of its divisors is an integer number (56455).

2112909 is an apocalyptic number.

It is an amenable number.

112909 is a deficient number, since it is larger than the sum of its proper divisors (1).

112909 is an equidigital number, since it uses as much as digits as its factorization.

112909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 112909 is about 336.0193446812. The cubic root of 112909 is about 48.3328999829.

The spelling of 112909 in words is "one hundred twelve thousand, nine hundred nine".