105049209 has 8 divisors (see below), whose sum is σ = 140135872. Its totient is φ = 69997680.

The previous prime is 105049177. The next prime is 105049229. The reversal of 105049209 is 902940501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105049209 - 2⁵ = 105049177 is a prime.

It is a super-2 number, since 2×105049209² = 22070672623051362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105049229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757 + ... + 14514.

It is an arithmetic number, because the mean of its divisors is an integer number (17516984).

Almost surely, 2^105049209 is an apocalyptic number.

It is an amenable number.

105049209 is a deficient number, since it is larger than the sum of its proper divisors (35086663).

105049209 is a wasteful number, since it uses less digits than its factorization.

105049209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17567.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 105049209 is about 10249.3516380306. The cubic root of 105049209 is about 471.8430858875.

The spelling of 105049209 in words is "one hundred five million, forty-nine thousand, two hundred nine".