106920209 has 8 divisors (see below), whose sum is σ = 120403200. Its totient is φ = 94064400.

The previous prime is 106920199. The next prime is 106920211. The reversal of 106920209 is 902029601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 106920209 - 2⁴ = 106920193 is a prime.

It is a super-2 number, since 2×106920209² = 22863862185207362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106920299) 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, 156434 + ... + 157115.

It is an arithmetic number, because the mean of its divisors is an integer number (15050400).

Almost surely, 2^106920209 is an apocalyptic number.

It is an amenable number.

106920209 is a deficient number, since it is larger than the sum of its proper divisors (13482991).

106920209 is a wasteful number, since it uses less digits than its factorization.

106920209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313591.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 106920209 is about 10340.2228699385. Note that the first 3 decimals coincide. The cubic root of 106920209 is about 474.6279028644.

The spelling of 106920209 in words is "one hundred six million, nine hundred twenty thousand, two hundred nine".