349630309 has 8 divisors (see below), whose sum is σ = 399765888. Its totient is φ = 299541840.

The previous prime is 349630301. The next prime is 349630339. The reversal of 349630309 is 903036943.

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 349630309 - 2³ = 349630301 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349630301) 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, 5904 + ... + 27094.

It is an arithmetic number, because the mean of its divisors is an integer number (49970736).

Almost surely, 2^349630309 is an apocalyptic number.

It is an amenable number.

349630309 is a deficient number, since it is larger than the sum of its proper divisors (50135579).

349630309 is a wasteful number, since it uses less digits than its factorization.

349630309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23555.

The product of its (nonzero) digits is 52488, while the sum is 37.

The square root of 349630309 is about 18698.4039158427. The cubic root of 349630309 is about 704.4816598014.

The spelling of 349630309 in words is "three hundred forty-nine million, six hundred thirty thousand, three hundred nine".