349669397 has 12 divisors (see below), whose sum is σ = 436156128. Its totient is φ = 272341800.

The previous prime is 349669387. The next prime is 349669433. The reversal of 349669397 is 793966943.

It is not a de Polignac number, because 349669397 - 2⁴ = 349669381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349669337) 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 11 ways as a sum of consecutive naturals, for example, 163022 + ... + 165152.

It is an arithmetic number, because the mean of its divisors is an integer number (36346344).

Almost surely, 2^349669397 is an apocalyptic number.

It is an amenable number.

349669397 is a deficient number, since it is larger than the sum of its proper divisors (86486731).

349669397 is an frugal number, since it uses more digits than its factorization.

349669397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280 (or 2149 counting only the distinct ones).

The product of its digits is 6613488, while the sum is 56.

The square root of 349669397 is about 18699.4491095326. The cubic root of 349669397 is about 704.5079120572.

The spelling of 349669397 in words is "three hundred forty-nine million, six hundred sixty-nine thousand, three hundred ninety-seven".