309730414 has 16 divisors (see below), whose sum is σ = 538892928. Its totient is φ = 130759992.

The previous prime is 309730403. The next prime is 309730417. The reversal of 309730414 is 414037903.

It is a super-2 number, since 2×309730414² = 191865858713222792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309730417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164164 + ... + 166039.

It is an arithmetic number, because the mean of its divisors is an integer number (33680808).

Almost surely, 2^309730414 is an apocalyptic number.

309730414 is a deficient number, since it is larger than the sum of its proper divisors (229162514).

309730414 is a wasteful number, since it uses less digits than its factorization.

309730414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330279.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 309730414 is about 17599.1594685655. The cubic root of 309730414 is about 676.5937021905.

The spelling of 309730414 in words is "three hundred nine million, seven hundred thirty thousand, four hundred fourteen".