264213909 has 12 divisors (see below), whose sum is σ = 382086016. Its totient is φ = 175937832.

The previous prime is 264213907. The next prime is 264213941. The reversal of 264213909 is 909312462.

264213909 is a `hidden beast` number, since 2 + 642 + 1 + 3 + 9 + 0 + 9 = 666.

It is not a de Polignac number, because 264213909 - 2¹ = 264213907 is a prime.

It is a super-3 number, since 3×264213909³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264213907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8677 + ... + 24570.

Almost surely, 2^264213909 is an apocalyptic number.

It is an amenable number.

264213909 is a deficient number, since it is larger than the sum of its proper divisors (117872107).

264213909 is a wasteful number, since it uses less digits than its factorization.

264213909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34136 (or 34133 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 264213909 is about 16254.6580708423. The cubic root of 264213909 is about 641.6800819669.

The spelling of 264213909 in words is "two hundred sixty-four million, two hundred thirteen thousand, nine hundred nine".