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106909 = 119719
BaseRepresentation
bin11010000110011101
312102122121
4122012131
511410114
62142541
7623455
oct320635
9172577
10106909
1173360
1251a51
133987a
142ad65
1521a24
hex1a19d

106909 has 4 divisors (see below), whose sum is σ = 116640. Its totient is φ = 97180.

The previous prime is 106907. The next prime is 106921. The reversal of 106909 is 909601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 106909 - 21 = 106907 is a prime.

It is a super-2 number, since 2×1069092 = 22859068562, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106903) 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, 4849 + ... + 4870.

It is an arithmetic number, because the mean of its divisors is an integer number (29160).

2106909 is an apocalyptic number.

It is an amenable number.

106909 is a deficient number, since it is larger than the sum of its proper divisors (9731).

106909 is an equidigital number, since it uses as much as digits as its factorization.

106909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9730.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 106909 is about 326.9694175301. The cubic root of 106909 is about 47.4611316383.

The spelling of 106909 in words is "one hundred six thousand, nine hundred nine".

Divisors: 1 11 9719 106909