299734139 has 4 divisors (see below), whose sum is σ = 315509640. Its totient is φ = 283958640.

The previous prime is 299734129. The next prime is 299734147. The reversal of 299734139 is 931437992.

It is a happy number.

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 299734139 - 2⁸ = 299733883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 299734093 and 299734102.

It is not an unprimeable number, because it can be changed into a prime (299734109) 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, 7887722 + ... + 7887759.

It is an arithmetic number, because the mean of its divisors is an integer number (78877410).

Almost surely, 2^299734139 is an apocalyptic number.

299734139 is a deficient number, since it is larger than the sum of its proper divisors (15775501).

299734139 is a wasteful number, since it uses less digits than its factorization.

299734139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15775500.

The product of its digits is 367416, while the sum is 47.

The square root of 299734139 is about 17312.8316285927. The cubic root of 299734139 is about 669.2351404002.

The spelling of 299734139 in words is "two hundred ninety-nine million, seven hundred thirty-four thousand, one hundred thirty-nine".