264250009 has 4 divisors (see below), whose sum is σ = 264368740. Its totient is φ = 264131280.

The previous prime is 264249977. The next prime is 264250031. The reversal of 264250009 is 900052462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13344409 + 250905600 = 3653^2 + 15840^2 .

It is a cyclic number.

It is not a de Polignac number, because 264250009 - 2⁵ = 264249977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264250069) 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, 55962 + ... + 60499.

It is an arithmetic number, because the mean of its divisors is an integer number (66092185).

Almost surely, 2^264250009 is an apocalyptic number.

It is an amenable number.

264250009 is a deficient number, since it is larger than the sum of its proper divisors (118731).

264250009 is a wasteful number, since it uses less digits than its factorization.

264250009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118730.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 264250009 is about 16255.7684838337. The cubic root of 264250009 is about 641.7093052530.

The spelling of 264250009 in words is "two hundred sixty-four million, two hundred fifty thousand, nine".