349906215 has 8 divisors (see below), whose sum is σ = 559849968. Its totient is φ = 186616640.

The previous prime is 349906201. The next prime is 349906217. The reversal of 349906215 is 512609943.

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

It is not a de Polignac number, because 349906215 - 2¹¹ = 349904167 is a prime.

It is a super-3 number, since 3×349906215³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349906217) 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, 11663526 + ... + 11663555.

It is an arithmetic number, because the mean of its divisors is an integer number (69981246).

Almost surely, 2^349906215 is an apocalyptic number.

349906215 is a deficient number, since it is larger than the sum of its proper divisors (209943753).

349906215 is a wasteful number, since it uses less digits than its factorization.

349906215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23327089.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 349906215 is about 18705.7802563806. The cubic root of 349906215 is about 704.6669217823. Note that the first 3 decimals are identical.

The spelling of 349906215 in words is "three hundred forty-nine million, nine hundred six thousand, two hundred fifteen".