106839979 has 4 divisors (see below), whose sum is σ = 109727584. Its totient is φ = 103952376.

The previous prime is 106839959. The next prime is 106839989. The reversal of 106839979 is 979938601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979938601 = 103 ⋅9513967.

It is a cyclic number.

It is not a de Polignac number, because 106839979 - 2⁷ = 106839851 is a prime.

It is a super-2 number, since 2×106839979² = 22829562225440882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106839949) 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, 1443747 + ... + 1443820.

It is an arithmetic number, because the mean of its divisors is an integer number (27431896).

Almost surely, 2^106839979 is an apocalyptic number.

106839979 is a deficient number, since it is larger than the sum of its proper divisors (2887605).

106839979 is an equidigital number, since it uses as much as digits as its factorization.

106839979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887604.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 106839979 is about 10336.3426317049. The cubic root of 106839979 is about 474.5091572267.

The spelling of 106839979 in words is "one hundred six million, eight hundred thirty-nine thousand, nine hundred seventy-nine".