264097909 has 2 divisors, whose sum is σ = 264097910. Its totient is φ = 264097908.

The previous prime is 264097879. The next prime is 264097913. The reversal of 264097909 is 909790462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236482884 + 27615025 = 15378^2 + 5255^2 .

It is a cyclic number.

It is not a de Polignac number, because 264097909 - 2⁵ = 264097877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264097969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132048954 + 132048955.

It is an arithmetic number, because the mean of its divisors is an integer number (132048955).

Almost surely, 2^264097909 is an apocalyptic number.

It is an amenable number.

264097909 is a deficient number, since it is larger than the sum of its proper divisors (1).

264097909 is an equidigital number, since it uses as much as digits as its factorization.

264097909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 264097909 is about 16251.0894711708. The cubic root of 264097909 is about 641.5861608637.

The spelling of 264097909 in words is "two hundred sixty-four million, ninety-seven thousand, nine hundred nine".