309474049 has 8 divisors (see below), whose sum is σ = 319116672. Its totient is φ = 299972400.

The previous prime is 309474037. The next prime is 309474059. The reversal of 309474049 is 940474903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 309474049 - 2⁷ = 309473921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (309474029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30777 + ... + 39574.

It is an arithmetic number, because the mean of its divisors is an integer number (39889584).

Almost surely, 2^309474049 is an apocalyptic number.

It is an amenable number.

309474049 is a deficient number, since it is larger than the sum of its proper divisors (9642623).

309474049 is an equidigital number, since it uses as much as digits as its factorization.

309474049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70487.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 309474049 is about 17591.8745163783. The cubic root of 309474049 is about 676.4069776336.

The spelling of 309474049 in words is "three hundred nine million, four hundred seventy-four thousand, forty-nine".