106549939 has 4 divisors (see below), whose sum is σ = 109148760. Its totient is φ = 103951120.

The previous prime is 106549921. The next prime is 106550023. The reversal of 106549939 is 939945601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939945601 = 7 ⋅134277943.

It is a cyclic number.

It is not a de Polignac number, because 106549939 - 2⁹ = 106549427 is a prime.

It is a super-2 number, since 2×106549939² = 22705779001807442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106549039) 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, 1299349 + ... + 1299430.

It is an arithmetic number, because the mean of its divisors is an integer number (27287190).

Almost surely, 2^106549939 is an apocalyptic number.

106549939 is a deficient number, since it is larger than the sum of its proper divisors (2598821).

106549939 is an equidigital number, since it uses as much as digits as its factorization.

106549939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598820.

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 106549939 is about 10322.3029891590. The cubic root of 106549939 is about 474.0793825162.

The spelling of 106549939 in words is "one hundred six million, five hundred forty-nine thousand, nine hundred thirty-nine".