106408109 has 4 divisors (see below), whose sum is σ = 106455360. Its totient is φ = 106360860.

The previous prime is 106408103. The next prime is 106408111. The reversal of 106408109 is 901804601.

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, and also an emirpimes, since its reverse is a distinct semiprime: 901804601 = 31 ⋅29090471.

It is a cyclic number.

It is not a de Polignac number, because 106408109 - 2¹⁶ = 106342573 is a prime.

It is a super-2 number, since 2×106408109² = 22645371321911762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106408103) 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, 20069 + ... + 24810.

It is an arithmetic number, because the mean of its divisors is an integer number (26613840).

Almost surely, 2^106408109 is an apocalyptic number.

It is an amenable number.

106408109 is a deficient number, since it is larger than the sum of its proper divisors (47251).

106408109 is an equidigital number, since it uses as much as digits as its factorization.

106408109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47250.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 106408109 is about 10315.4306260088. The cubic root of 106408109 is about 473.8689380504.

The spelling of 106408109 in words is "one hundred six million, four hundred eight thousand, one hundred nine".