139264361 has 4 divisors (see below), whose sum is σ = 139986132. Its totient is φ = 138542592.

The previous prime is 139264313. The next prime is 139264373. The reversal of 139264361 is 163462931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17272336 + 121992025 = 4156^2 + 11045^2 .

It is a cyclic number.

It is not a de Polignac number, because 139264361 - 2⁶ = 139264297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139260361) 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, 360596 + ... + 360981.

It is an arithmetic number, because the mean of its divisors is an integer number (34996533).

Almost surely, 2^139264361 is an apocalyptic number.

It is an amenable number.

139264361 is a deficient number, since it is larger than the sum of its proper divisors (721771).

139264361 is an equidigital number, since it uses as much as digits as its factorization.

139264361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721770.

The product of its digits is 23328, while the sum is 35.

The square root of 139264361 is about 11801.0322006170. The cubic root of 139264361 is about 518.3383360823.

The spelling of 139264361 in words is "one hundred thirty-nine million, two hundred sixty-four thousand, three hundred sixty-one".