264995959 has 4 divisors (see below), whose sum is σ = 265028680. Its totient is φ = 264963240.

The previous prime is 264995957. The next prime is 264995977. The reversal of 264995959 is 959599462.

264995959 = T₁₃₂₉₀ + T₁₃₂₉₁ + T₁₃₂₉₂.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 959599462 = 2 ⋅479799731.

It is a cyclic number.

It is not a de Polignac number, because 264995959 - 2¹ = 264995957 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 (264995957) 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 in 3 ways as a sum of consecutive naturals, for example, 5737 + ... + 23725.

It is an arithmetic number, because the mean of its divisors is an integer number (66257170).

Almost surely, 2^264995959 is an apocalyptic number.

264995959 is the 13292-nd centered triangular number.

264995959 is a deficient number, since it is larger than the sum of its proper divisors (32721).

264995959 is a wasteful number, since it uses less digits than its factorization.

264995959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32720.

The product of its digits is 7873200, while the sum is 58.

The square root of 264995959 is about 16278.6964772982. The cubic root of 264995959 is about 642.3125639362.

The spelling of 264995959 in words is "two hundred sixty-four million, nine hundred ninety-five thousand, nine hundred fifty-nine".