264643429 has 4 divisors (see below), whose sum is σ = 264676140. Its totient is φ = 264610720.

The previous prime is 264643427. The next prime is 264643433. The reversal of 264643429 is 924346462.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 76212900 + 188430529 = 8730^2 + 13727^2 .

It is a cyclic number.

It is not a de Polignac number, because 264643429 - 2¹ = 264643427 is a prime.

It is a super-2 number, since 2×264643429² = 140072289025756082, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 264643391 and 264643400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264643427) 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, 5649 + ... + 23689.

It is an arithmetic number, because the mean of its divisors is an integer number (66169035).

Almost surely, 2^264643429 is an apocalyptic number.

It is an amenable number.

264643429 is a deficient number, since it is larger than the sum of its proper divisors (32711).

264643429 is a wasteful number, since it uses less digits than its factorization.

264643429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32710.

The product of its digits is 248832, while the sum is 40.

The square root of 264643429 is about 16267.8649182983. The cubic root of 264643429 is about 642.0276099900.

The spelling of 264643429 in words is "two hundred sixty-four million, six hundred forty-three thousand, four hundred twenty-nine".