264139201 has 4 divisors (see below), whose sum is σ = 269759232. Its totient is φ = 258519172.

The previous prime is 264139181. The next prime is 264139229. The reversal of 264139201 is 102931462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102931462 = 2 ⋅51465731.

It is a cyclic number.

It is not a de Polignac number, because 264139201 - 2²¹ = 262042049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264139201.

It is not an unprimeable number, because it can be changed into a prime (264139231) 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, 2809945 + ... + 2810038.

It is an arithmetic number, because the mean of its divisors is an integer number (67439808).

Almost surely, 2^264139201 is an apocalyptic number.

It is an amenable number.

264139201 is a deficient number, since it is larger than the sum of its proper divisors (5620031).

264139201 is an equidigital number, since it uses as much as digits as its factorization.

264139201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5620030.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 264139201 is about 16252.3598594173. The cubic root of 264139201 is about 641.6195966897.

The spelling of 264139201 in words is "two hundred sixty-four million, one hundred thirty-nine thousand, two hundred one".