264799109 has 4 divisors (see below), whose sum is σ = 269140140. Its totient is φ = 260458080.

The previous prime is 264799103. The next prime is 264799127. The reversal of 264799109 is 901997462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901997462 = 2 ⋅450998731.

It can be written as a sum of positive squares in 2 ways, for example, as 132480100 + 132319009 = 11510^2 + 11503^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264799109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264799103) 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 3 ways as a sum of consecutive naturals, for example, 2170424 + ... + 2170545.

It is an arithmetic number, because the mean of its divisors is an integer number (67285035).

Almost surely, 2^264799109 is an apocalyptic number.

It is an amenable number.

264799109 is a deficient number, since it is larger than the sum of its proper divisors (4341031).

264799109 is an equidigital number, since it uses as much as digits as its factorization.

264799109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341030.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 264799109 is about 16272.6491082429. The cubic root of 264799109 is about 642.1534790584.

The spelling of 264799109 in words is "two hundred sixty-four million, seven hundred ninety-nine thousand, one hundred nine".