106455809 has 4 divisors (see below), whose sum is σ = 106840404. Its totient is φ = 106071216.

The previous prime is 106455793. The next prime is 106455821. The reversal of 106455809 is 908554601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 908554601 = 29 ⋅31329469.

It can be written as a sum of positive squares in 2 ways, for example, as 69889600 + 36566209 = 8360^2 + 6047^2 .

It is a cyclic number.

It is not a de Polignac number, because 106455809 - 2⁴ = 106455793 is a prime.

It is a super-2 number, since 2×106455809² = 22665678539688962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106458809) 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, 191882 + ... + 192435.

It is an arithmetic number, because the mean of its divisors is an integer number (26710101).

Almost surely, 2^106455809 is an apocalyptic number.

It is an amenable number.

106455809 is a deficient number, since it is larger than the sum of its proper divisors (384595).

106455809 is an equidigital number, since it uses as much as digits as its factorization.

106455809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384594.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 106455809 is about 10317.7424371807. The cubic root of 106455809 is about 473.9397351975.

The spelling of 106455809 in words is "one hundred six million, four hundred fifty-five thousand, eight hundred nine".