309030049 has 4 divisors (see below), whose sum is σ = 309109680. Its totient is φ = 308950420.

The previous prime is 309029977. The next prime is 309030053. The reversal of 309030049 is 940030903.

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.

It is a cyclic number.

It is not a de Polignac number, because 309030049 - 2⁷ = 309029921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 309029999 and 309030026.

It is not an unprimeable number, because it can be changed into a prime (309030089) 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, 33679 + ... + 41860.

It is an arithmetic number, because the mean of its divisors is an integer number (77277420).

Almost surely, 2^309030049 is an apocalyptic number.

It is an amenable number.

309030049 is a deficient number, since it is larger than the sum of its proper divisors (79631).

309030049 is an equidigital number, since it uses as much as digits as its factorization.

309030049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79630.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 309030049 is about 17579.2505244109. The cubic root of 309030049 is about 676.0833442109.

The spelling of 309030049 in words is "three hundred nine million, thirty thousand, forty-nine".