300149139 has 4 divisors (see below), whose sum is σ = 400198856. Its totient is φ = 200099424.

The previous prime is 300149119. The next prime is 300149147. The reversal of 300149139 is 931941003.

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

It is not a de Polignac number, because 300149139 - 2¹³ = 300140947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (300149119) 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, 50024854 + ... + 50024859.

It is an arithmetic number, because the mean of its divisors is an integer number (100049714).

Almost surely, 2^300149139 is an apocalyptic number.

300149139 is a deficient number, since it is larger than the sum of its proper divisors (100049717).

300149139 is a wasteful number, since it uses less digits than its factorization.

300149139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100049716.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 300149139 is about 17324.8128128416. The cubic root of 300149139 is about 669.5438634389.

The spelling of 300149139 in words is "three hundred million, one hundred forty-nine thousand, one hundred thirty-nine".