309087074 has 8 divisors (see below), whose sum is σ = 465281388. Its totient is φ = 153993280.

The previous prime is 309087071. The next prime is 309087083. The reversal of 309087074 is 470780903.

It can be written as a sum of positive squares in 2 ways, for example, as 270832849 + 38254225 = 16457^2 + 6185^2 .

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

It is a super-3 number, since 3×309087074³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (309087071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274427 + ... + 275550.

Almost surely, 2^309087074 is an apocalyptic number.

309087074 is a deficient number, since it is larger than the sum of its proper divisors (156194314).

309087074 is a wasteful number, since it uses less digits than its factorization.

309087074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550260.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 309087074 is about 17580.8723901859. The cubic root of 309087074 is about 676.1249273101.

The spelling of 309087074 in words is "three hundred nine million, eighty-seven thousand, seventy-four".