106439811 has 4 divisors (see below), whose sum is σ = 141919752. Its totient is φ = 70959872.

The previous prime is 106439783. The next prime is 106439897. The reversal of 106439811 is 118934601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 106439811 - 2⁶ = 106439747 is a prime.

It is a super-2 number, since 2×106439811² = 22658866731431442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106439611) 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, 17739966 + ... + 17739971.

It is an arithmetic number, because the mean of its divisors is an integer number (35479938).

Almost surely, 2^106439811 is an apocalyptic number.

106439811 is a deficient number, since it is larger than the sum of its proper divisors (35479941).

106439811 is an equidigital number, since it uses as much as digits as its factorization.

106439811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35479940.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 106439811 is about 10316.9671415586. The cubic root of 106439811 is about 473.9159930527.

The spelling of 106439811 in words is "one hundred six million, four hundred thirty-nine thousand, eight hundred eleven".