300906139 has 4 divisors (see below), whose sum is σ = 300951720. Its totient is φ = 300860560.

The previous prime is 300906101. The next prime is 300906161. The reversal of 300906139 is 931609003.

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

It is a cyclic number.

It is not a de Polignac number, because 300906139 - 2¹⁵ = 300873371 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 300906139.

It is not an unprimeable number, because it can be changed into a prime (300904139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10777 + ... + 26794.

It is an arithmetic number, because the mean of its divisors is an integer number (75237930).

Almost surely, 2^300906139 is an apocalyptic number.

300906139 is a deficient number, since it is larger than the sum of its proper divisors (45581).

300906139 is an equidigital number, since it uses as much as digits as its factorization.

300906139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45580.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 300906139 is about 17346.6463329371. The cubic root of 300906139 is about 670.1062718486.

The spelling of 300906139 in words is "three hundred million, nine hundred six thousand, one hundred thirty-nine".