264629921 has 2 divisors, whose sum is σ = 264629922. Its totient is φ = 264629920.

The previous prime is 264629917. The next prime is 264629933. The reversal of 264629921 is 129926462.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264517696 + 112225 = 16264^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 264629921 - 2² = 264629917 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (264629971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132314960 + 132314961.

It is an arithmetic number, because the mean of its divisors is an integer number (132314961).

Almost surely, 2^264629921 is an apocalyptic number.

It is an amenable number.

264629921 is a deficient number, since it is larger than the sum of its proper divisors (1).

264629921 is an equidigital number, since it uses as much as digits as its factorization.

264629921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 264629921 is about 16267.4497386652. The cubic root of 264629921 is about 642.0166862897.

The spelling of 264629921 in words is "two hundred sixty-four million, six hundred twenty-nine thousand, nine hundred twenty-one".