349669305 has 40 divisors (see below), whose sum is σ = 647057664. Its totient is φ = 180468000.

The previous prime is 349669297. The next prime is 349669337. The reversal of 349669305 is 503966943.

It is a happy number.

It is not a de Polignac number, because 349669305 - 2³ = 349669297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1371 + ... + 26480.

Almost surely, 2^349669305 is an apocalyptic number.

It is an amenable number.

349669305 is a deficient number, since it is larger than the sum of its proper divisors (297388359).

349669305 is a wasteful number, since it uses less digits than its factorization.

349669305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27899 (or 27890 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The square root of 349669305 is about 18699.4466495669. The cubic root of 349669305 is about 704.5078502706.

The spelling of 349669305 in words is "three hundred forty-nine million, six hundred sixty-nine thousand, three hundred five".