106440405 has 16 divisors (see below), whose sum is σ = 170973504. Its totient is φ = 56545280.

The previous prime is 106440403. The next prime is 106440409. The reversal of 106440405 is 504044601.

It is not a de Polignac number, because 106440405 - 2¹ = 106440403 is a prime.

It is a super-2 number, since 2×106440405² = 22659119633128050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106440401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9951 + ... + 17660.

It is an arithmetic number, because the mean of its divisors is an integer number (10685844).

Almost surely, 2^106440405 is an apocalyptic number.

106440405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

106440405 is a deficient number, since it is larger than the sum of its proper divisors (64533099).

106440405 is a wasteful number, since it uses less digits than its factorization.

106440405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27876.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 106440405 is about 10316.9959290483. The cubic root of 106440405 is about 473.9168746325.

The spelling of 106440405 in words is "one hundred six million, four hundred forty thousand, four hundred five".