345799221 has 16 divisors (see below), whose sum is σ = 486643200. Its totient is φ = 217809648.

The previous prime is 345799213. The next prime is 345799241. The reversal of 345799221 is 122997543.

It is not a de Polignac number, because 345799221 - 2³ = 345799213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345799241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13600 + ... + 29606.

It is an arithmetic number, because the mean of its divisors is an integer number (30415200).

Almost surely, 2^345799221 is an apocalyptic number.

It is an amenable number.

345799221 is a deficient number, since it is larger than the sum of its proper divisors (140843979).

345799221 is a wasteful number, since it uses less digits than its factorization.

345799221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16408.

The product of its digits is 136080, while the sum is 42.

The square root of 345799221 is about 18595.6774816085. The cubic root of 345799221 is about 701.8990751899.

The spelling of 345799221 in words is "three hundred forty-five million, seven hundred ninety-nine thousand, two hundred twenty-one".